Api-Roll 50: 2017-06-12

generated/googleapis/lib/youtube/v3.dart

 // This is a generated file (see the discoveryapis_generator project).
 
 library googleapis.youtube.v3;
 
 import 'dart:core' as core;
 import 'dart:async' as async;
 import 'dart:convert' as convert;
 
 import 'package:_discoveryapis_commons/_discoveryapis_commons.dart' as commons;
 import 'package:http/http.dart' as http;
@@ skipping 6118 matching lines @@
 
   AccessPolicy.fromJson(core.Map _json) {
     if (_json.containsKey("allowed")) {
       allowed = _json["allowed"];
     }
     if (_json.containsKey("exception")) {
       exception = _json["exception"];
     }
   }
 
-  core.Map toJson() {
-    var _json = new core.Map();
+  core.Map<core.String, core.Object> toJson() {
+    final core.Map<core.String, core.Object> _json = new core.Map<core.String, core.Object>();
     if (allowed != null) {
       _json["allowed"] = allowed;
     }
     if (exception != null) {
       _json["exception"] = exception;
     }
     return _json;
   }
 }
 
@@ skipping 41 matching lines @@
       id = _json["id"];
     }
     if (_json.containsKey("kind")) {
       kind = _json["kind"];
     }
     if (_json.containsKey("snippet")) {
       snippet = new ActivitySnippet.fromJson(_json["snippet"]);
     }
   }
 
-  core.Map toJson() {
-    var _json = new core.Map();
+  core.Map<core.String, core.Object> toJson() {
+    final core.Map<core.String, core.Object> _json = new core.Map<core.String, core.Object>();
     if (contentDetails != null) {
       _json["contentDetails"] = (contentDetails).toJson();
     }
     if (etag != null) {
       _json["etag"] = etag;
     }
     if (id != null) {
       _json["id"] = id;
     }
     if (kind != null) {
@@ skipping 104 matching lines @@
       social = new ActivityContentDetailsSocial.fromJson(_json["social"]);
     }
     if (_json.containsKey("subscription")) {
       subscription = new ActivityContentDetailsSubscription.fromJson(_json["subscription"]);
     }
     if (_json.containsKey("upload")) {
       upload = new ActivityContentDetailsUpload.fromJson(_json["upload"]);
     }
   }
 
-  core.Map toJson() {
-    var _json = new core.Map();
+  core.Map<core.String, core.Object> toJson() {
+    final core.Map<core.String, core.Object> _json = new core.Map<core.String, core.Object>();
     if (bulletin != null) {
       _json["bulletin"] = (bulletin).toJson();
     }
     if (channelItem != null) {
       _json["channelItem"] = (channelItem).toJson();
     }
     if (comment != null) {
       _json["comment"] = (comment).toJson();
     }
     if (favorite != null) {
@@ skipping 33 matching lines @@
   ResourceId resourceId;
 
   ActivityContentDetailsBulletin();
 
   ActivityContentDetailsBulletin.fromJson(core.Map _json) {
     if (_json.containsKey("resourceId")) {
       resourceId = new ResourceId.fromJson(_json["resourceId"]);
     }
   }
 
-  core.Map toJson() {
-    var _json = new core.Map();
+  core.Map<core.String, core.Object> toJson() {
+    final core.Map<core.String, core.Object> _json = new core.Map<core.String, core.Object>();
     if (resourceId != null) {
       _json["resourceId"] = (resourceId).toJson();
     }
     return _json;
   }
 }
 
 /** Details about a resource which was added to a channel. */
 class ActivityContentDetailsChannelItem {
   /**
    * The resourceId object contains information that identifies the resource
    * that was added to the channel.
    */
   ResourceId resourceId;
 
   ActivityContentDetailsChannelItem();
 
   ActivityContentDetailsChannelItem.fromJson(core.Map _json) {
     if (_json.containsKey("resourceId")) {
       resourceId = new ResourceId.fromJson(_json["resourceId"]);
     }
   }
 
-  core.Map toJson() {
-    var _json = new core.Map();
+  core.Map<core.String, core.Object> toJson() {
+    final core.Map<core.String, core.Object> _json = new core.Map<core.String, core.Object>();
     if (resourceId != null) {
       _json["resourceId"] = (resourceId).toJson();
     }
     return _json;
   }
 }
 
 /** Information about a resource that received a comment. */
 class ActivityContentDetailsComment {
   /**
    * The resourceId object contains information that identifies the resource
    * associated with the comment.
    */
   ResourceId resourceId;
 
   ActivityContentDetailsComment();
 
   ActivityContentDetailsComment.fromJson(core.Map _json) {
     if (_json.containsKey("resourceId")) {
       resourceId = new ResourceId.fromJson(_json["resourceId"]);
     }
   }
 
-  core.Map toJson() {
-    var _json = new core.Map();
+  core.Map<core.String, core.Object> toJson() {
+    final core.Map<core.String, core.Object> _json = new core.Map<core.String, core.Object>();
     if (resourceId != null) {
       _json["resourceId"] = (resourceId).toJson();
     }
     return _json;
   }
 }
 
 /** Information about a video that was marked as a favorite video. */
 class ActivityContentDetailsFavorite {
   /**
    * The resourceId object contains information that identifies the resource
    * that was marked as a favorite.
    */
   ResourceId resourceId;
 
   ActivityContentDetailsFavorite();
 
   ActivityContentDetailsFavorite.fromJson(core.Map _json) {
     if (_json.containsKey("resourceId")) {
       resourceId = new ResourceId.fromJson(_json["resourceId"]);
     }
   }
 
-  core.Map toJson() {
-    var _json = new core.Map();
+  core.Map<core.String, core.Object> toJson() {
+    final core.Map<core.String, core.Object> _json = new core.Map<core.String, core.Object>();
     if (resourceId != null) {
       _json["resourceId"] = (resourceId).toJson();
     }
     return _json;
   }
 }
 
 /** Information about a resource that received a positive (like) rating. */
 class ActivityContentDetailsLike {
   /**
    * The resourceId object contains information that identifies the rated
    * resource.
    */
   ResourceId resourceId;
 
   ActivityContentDetailsLike();
 
   ActivityContentDetailsLike.fromJson(core.Map _json) {
     if (_json.containsKey("resourceId")) {
       resourceId = new ResourceId.fromJson(_json["resourceId"]);
     }
   }
 
-  core.Map toJson() {
-    var _json = new core.Map();
+  core.Map<core.String, core.Object> toJson() {
+    final core.Map<core.String, core.Object> _json = new core.Map<core.String, core.Object>();
     if (resourceId != null) {
       _json["resourceId"] = (resourceId).toJson();
     }
     return _json;
   }
 }
 
 /** Information about a new playlist item. */
 class ActivityContentDetailsPlaylistItem {
   /** The value that YouTube uses to uniquely identify the playlist. */
@@ skipping 13 matching lines @@
       playlistId = _json["playlistId"];
     }
     if (_json.containsKey("playlistItemId")) {
       playlistItemId = _json["playlistItemId"];
     }
     if (_json.containsKey("resourceId")) {
       resourceId = new ResourceId.fromJson(_json["resourceId"]);
     }
   }
 
-  core.Map toJson() {
-    var _json = new core.Map();
+  core.Map<core.String, core.Object> toJson() {
+    final core.Map<core.String, core.Object> _json = new core.Map<core.String, core.Object>();
     if (playlistId != null) {
       _json["playlistId"] = playlistId;
     }
     if (playlistItemId != null) {
       _json["playlistItemId"] = playlistItemId;
     }
     if (resourceId != null) {
       _json["resourceId"] = (resourceId).toJson();
     }
     return _json;
@@ skipping 76 matching lines @@
       forecastingUrl = _json["forecastingUrl"];
     }
     if (_json.containsKey("impressionUrl")) {
       impressionUrl = _json["impressionUrl"];
     }
     if (_json.containsKey("videoId")) {
       videoId = _json["videoId"];
     }
   }
 
-  core.Map toJson() {
-    var _json = new core.Map();
+  core.Map<core.String, core.Object> toJson() {
+    final core.Map<core.String, core.Object> _json = new core.Map<core.String, core.Object>();
     if (adTag != null) {
       _json["adTag"] = adTag;
     }
     if (clickTrackingUrl != null) {
       _json["clickTrackingUrl"] = clickTrackingUrl;
     }
     if (creativeViewUrl != null) {
       _json["creativeViewUrl"] = creativeViewUrl;
     }
     if (ctaType != null) {
@@ skipping 50 matching lines @@
       reason = _json["reason"];
     }
     if (_json.containsKey("resourceId")) {
       resourceId = new ResourceId.fromJson(_json["resourceId"]);
     }
     if (_json.containsKey("seedResourceId")) {
       seedResourceId = new ResourceId.fromJson(_json["seedResourceId"]);
     }
   }
 
-  core.Map toJson() {
-    var _json = new core.Map();
+  core.Map<core.String, core.Object> toJson() {
+    final core.Map<core.String, core.Object> _json = new core.Map<core.String, core.Object>();
     if (reason != null) {
       _json["reason"] = reason;
     }
     if (resourceId != null) {
       _json["resourceId"] = (resourceId).toJson();
     }
     if (seedResourceId != null) {
       _json["seedResourceId"] = (seedResourceId).toJson();
     }
     return _json;
@@ skipping 36 matching lines @@
       referenceUrl = _json["referenceUrl"];
     }
     if (_json.containsKey("resourceId")) {
       resourceId = new ResourceId.fromJson(_json["resourceId"]);
     }
     if (_json.containsKey("type")) {
       type = _json["type"];
     }
   }
 
-  core.Map toJson() {
-    var _json = new core.Map();
+  core.Map<core.String, core.Object> toJson() {
+    final core.Map<core.String, core.Object> _json = new core.Map<core.String, core.Object>();
     if (author != null) {
       _json["author"] = author;
     }
     if (imageUrl != null) {
       _json["imageUrl"] = imageUrl;
     }
     if (referenceUrl != null) {
       _json["referenceUrl"] = referenceUrl;
     }
     if (resourceId != null) {
@@ skipping 15 matching lines @@
   ResourceId resourceId;
 
   ActivityContentDetailsSubscription();
 
   ActivityContentDetailsSubscription.fromJson(core.Map _json) {
     if (_json.containsKey("resourceId")) {
       resourceId = new ResourceId.fromJson(_json["resourceId"]);
     }
   }
 
-  core.Map toJson() {
-    var _json = new core.Map();
+  core.Map<core.String, core.Object> toJson() {
+    final core.Map<core.String, core.Object> _json = new core.Map<core.String, core.Object>();
     if (resourceId != null) {
       _json["resourceId"] = (resourceId).toJson();
     }
     return _json;
   }
 }
 
 /** Information about the uploaded video. */
 class ActivityContentDetailsUpload {
   /** The ID that YouTube uses to uniquely identify the uploaded video. */
   core.String videoId;
 
   ActivityContentDetailsUpload();
 
   ActivityContentDetailsUpload.fromJson(core.Map _json) {
     if (_json.containsKey("videoId")) {
       videoId = _json["videoId"];
     }
   }
 
-  core.Map toJson() {
-    var _json = new core.Map();
+  core.Map<core.String, core.Object> toJson() {
+    final core.Map<core.String, core.Object> _json = new core.Map<core.String, core.Object>();
     if (videoId != null) {
       _json["videoId"] = videoId;
     }
     return _json;
   }
 }
 
 class ActivityListResponse {
   /** Etag of this resource. */
   core.String etag;
@@ skipping 46 matching lines @@
       prevPageToken = _json["prevPageToken"];
     }
     if (_json.containsKey("tokenPagination")) {
       tokenPagination = new TokenPagination.fromJson(_json["tokenPagination"]);
     }
     if (_json.containsKey("visitorId")) {
       visitorId = _json["visitorId"];
     }
   }
 
-  core.Map toJson() {
-    var _json = new core.Map();
+  core.Map<core.String, core.Object> toJson() {
+    final core.Map<core.String, core.Object> _json = new core.Map<core.String, core.Object>();
     if (etag != null) {
       _json["etag"] = etag;
     }
     if (eventId != null) {
       _json["eventId"] = eventId;
     }
     if (items != null) {
       _json["items"] = items.map((value) => (value).toJson()).toList();
     }
     if (kind != null) {
@@ skipping 96 matching lines @@
       thumbnails = new ThumbnailDetails.fromJson(_json["thumbnails"]);
     }
     if (_json.containsKey("title")) {
       title = _json["title"];
     }
     if (_json.containsKey("type")) {
       type = _json["type"];
     }
   }
 
-  core.Map toJson() {
-    var _json = new core.Map();
+  core.Map<core.String, core.Object> toJson() {
+    final core.Map<core.String, core.Object> _json = new core.Map<core.String, core.Object>();
     if (channelId != null) {
       _json["channelId"] = channelId;
     }
     if (channelTitle != null) {
       _json["channelTitle"] = channelTitle;
     }
     if (description != null) {
       _json["description"] = description;
     }
     if (groupId != null) {
@@ skipping 42 matching lines @@
       id = _json["id"];
     }
     if (_json.containsKey("kind")) {
       kind = _json["kind"];
     }
     if (_json.containsKey("snippet")) {
       snippet = new CaptionSnippet.fromJson(_json["snippet"]);
     }
   }
 
-  core.Map toJson() {
-    var _json = new core.Map();
+  core.Map<core.String, core.Object> toJson() {
+    final core.Map<core.String, core.Object> _json = new core.Map<core.String, core.Object>();
     if (etag != null) {
       _json["etag"] = etag;
     }
     if (id != null) {
       _json["id"] = id;
     }
     if (kind != null) {
       _json["kind"] = kind;
     }
     if (snippet != null) {
@@ skipping 31 matching lines @@
       items = _json["items"].map((value) => new Caption.fromJson(value)).toList();
     }
     if (_json.containsKey("kind")) {
       kind = _json["kind"];
     }
     if (_json.containsKey("visitorId")) {
       visitorId = _json["visitorId"];
     }
   }
 
-  core.Map toJson() {
-    var _json = new core.Map();
+  core.Map<core.String, core.Object> toJson() {
+    final core.Map<core.String, core.Object> _json = new core.Map<core.String, core.Object>();
     if (etag != null) {
       _json["etag"] = etag;
     }
     if (eventId != null) {
       _json["eventId"] = eventId;
     }
     if (items != null) {
       _json["items"] = items.map((value) => (value).toJson()).toList();
     }
     if (kind != null) {
@@ skipping 131 matching lines @@
       status = _json["status"];
     }
     if (_json.containsKey("trackKind")) {
       trackKind = _json["trackKind"];
     }
     if (_json.containsKey("videoId")) {
       videoId = _json["videoId"];
     }
   }
 
-  core.Map toJson() {
-    var _json = new core.Map();
+  core.Map<core.String, core.Object> toJson() {
+    final core.Map<core.String, core.Object> _json = new core.Map<core.String, core.Object>();
     if (audioTrackType != null) {
       _json["audioTrackType"] = audioTrackType;
     }
     if (failureReason != null) {
       _json["failureReason"] = failureReason;
     }
     if (isAutoSynced != null) {
       _json["isAutoSynced"] = isAutoSynced;
     }
     if (isCC != null) {
@@ skipping 79 matching lines @@
       ingestionInfo = new IngestionInfo.fromJson(_json["ingestionInfo"]);
     }
     if (_json.containsKey("ingestionType")) {
       ingestionType = _json["ingestionType"];
     }
     if (_json.containsKey("resolution")) {
       resolution = _json["resolution"];
     }
   }
 
-  core.Map toJson() {
-    var _json = new core.Map();
+  core.Map<core.String, core.Object> toJson() {
+    final core.Map<core.String, core.Object> _json = new core.Map<core.String, core.Object>();
     if (format != null) {
       _json["format"] = format;
     }
     if (frameRate != null) {
       _json["frameRate"] = frameRate;
     }
     if (ingestionInfo != null) {
       _json["ingestionInfo"] = (ingestionInfo).toJson();
     }
     if (ingestionType != null) {
@@ skipping 91 matching lines @@
     if (_json.containsKey("id")) {
       id = _json["id"];
     }
     if (_json.containsKey("invideoPromotion")) {
       invideoPromotion = new InvideoPromotion.fromJson(_json["invideoPromotion"]);
     }
     if (_json.containsKey("kind")) {
       kind = _json["kind"];
     }
     if (_json.containsKey("localizations")) {
-      localizations = commons.mapMap(_json["localizations"], (item) => new ChannelLocalization.fromJson(item));
+      localizations = commons.mapMap<core.Map<core.String, core.Object>, ChannelLocalization>(_json["localizations"], (core.Map<core.String, core.Object> item) => new ChannelLocalization.fromJson(item));
     }
     if (_json.containsKey("snippet")) {
       snippet = new ChannelSnippet.fromJson(_json["snippet"]);
     }
     if (_json.containsKey("statistics")) {
       statistics = new ChannelStatistics.fromJson(_json["statistics"]);
     }
     if (_json.containsKey("status")) {
       status = new ChannelStatus.fromJson(_json["status"]);
     }
     if (_json.containsKey("topicDetails")) {
       topicDetails = new ChannelTopicDetails.fromJson(_json["topicDetails"]);
     }
   }
 
-  core.Map toJson() {
-    var _json = new core.Map();
+  core.Map<core.String, core.Object> toJson() {
+    final core.Map<core.String, core.Object> _json = new core.Map<core.String, core.Object>();
     if (auditDetails != null) {
       _json["auditDetails"] = (auditDetails).toJson();
     }
     if (brandingSettings != null) {
       _json["brandingSettings"] = (brandingSettings).toJson();
     }
     if (contentDetails != null) {
       _json["contentDetails"] = (contentDetails).toJson();
     }
     if (contentOwnerDetails != null) {
       _json["contentOwnerDetails"] = (contentOwnerDetails).toJson();
     }
     if (conversionPings != null) {
       _json["conversionPings"] = (conversionPings).toJson();
     }
     if (etag != null) {
       _json["etag"] = etag;
     }
     if (id != null) {
       _json["id"] = id;
     }
     if (invideoPromotion != null) {
       _json["invideoPromotion"] = (invideoPromotion).toJson();
     }
     if (kind != null) {
       _json["kind"] = kind;
     }
     if (localizations != null) {
-      _json["localizations"] = commons.mapMap(localizations, (item) => (item).toJson());
+      _json["localizations"] = commons.mapMap<ChannelLocalization, core.Map<core.String, core.Object>>(localizations, (ChannelLocalization item) => (item).toJson());
     }
     if (snippet != null) {
       _json["snippet"] = (snippet).toJson();
     }
     if (statistics != null) {
       _json["statistics"] = (statistics).toJson();
     }
     if (status != null) {
       _json["status"] = (status).toJson();
     }
@@ skipping 34 matching lines @@
       contentIdClaimsGoodStanding = _json["contentIdClaimsGoodStanding"];
     }
     if (_json.containsKey("copyrightStrikesGoodStanding")) {
       copyrightStrikesGoodStanding = _json["copyrightStrikesGoodStanding"];
     }
     if (_json.containsKey("overallGoodStanding")) {
       overallGoodStanding = _json["overallGoodStanding"];
     }
   }
 
-  core.Map toJson() {
-    var _json = new core.Map();
+  core.Map<core.String, core.Object> toJson() {
+    final core.Map<core.String, core.Object> _json = new core.Map<core.String, core.Object>();
     if (communityGuidelinesGoodStanding != null) {
       _json["communityGuidelinesGoodStanding"] = communityGuidelinesGoodStanding;
     }
     if (contentIdClaimsGoodStanding != null) {
       _json["contentIdClaimsGoodStanding"] = contentIdClaimsGoodStanding;
     }
     if (copyrightStrikesGoodStanding != null) {
       _json["copyrightStrikesGoodStanding"] = copyrightStrikesGoodStanding;
     }
     if (overallGoodStanding != null) {
@@ skipping 24 matching lines @@
       etag = _json["etag"];
     }
     if (_json.containsKey("kind")) {
       kind = _json["kind"];
     }
     if (_json.containsKey("url")) {
       url = _json["url"];
     }
   }
 
-  core.Map toJson() {
-    var _json = new core.Map();
+  core.Map<core.String, core.Object> toJson() {
+    final core.Map<core.String, core.Object> _json = new core.Map<core.String, core.Object>();
     if (etag != null) {
       _json["etag"] = etag;
     }
     if (kind != null) {
       _json["kind"] = kind;
     }
     if (url != null) {
       _json["url"] = url;
     }
     return _json;
@@ skipping 21 matching lines @@
       hints = _json["hints"].map((value) => new PropertyValue.fromJson(value)).toList();
     }
     if (_json.containsKey("image")) {
       image = new ImageSettings.fromJson(_json["image"]);
     }
     if (_json.containsKey("watch")) {
       watch = new WatchSettings.fromJson(_json["watch"]);
     }
   }
 
-  core.Map toJson() {
-    var _json = new core.Map();
+  core.Map<core.String, core.Object> toJson() {
+    final core.Map<core.String, core.Object> _json = new core.Map<core.String, core.Object>();
     if (channel != null) {
       _json["channel"] = (channel).toJson();
     }
     if (hints != null) {
       _json["hints"] = hints.map((value) => (value).toJson()).toList();
     }
     if (image != null) {
       _json["image"] = (image).toJson();
     }
     if (watch != null) {
@@ skipping 48 matching lines @@
       uploads = _json["uploads"];
     }
     if (_json.containsKey("watchHistory")) {
       watchHistory = _json["watchHistory"];
     }
     if (_json.containsKey("watchLater")) {
       watchLater = _json["watchLater"];
     }
   }
 
-  core.Map toJson() {
-    var _json = new core.Map();
+  core.Map<core.String, core.Object> toJson() {
+    final core.Map<core.String, core.Object> _json = new core.Map<core.String, core.Object>();
     if (favorites != null) {
       _json["favorites"] = favorites;
     }
     if (likes != null) {
       _json["likes"] = likes;
     }
     if (uploads != null) {
       _json["uploads"] = uploads;
     }
     if (watchHistory != null) {
@@ skipping 11 matching lines @@
   ChannelContentDetailsRelatedPlaylists relatedPlaylists;
 
   ChannelContentDetails();
 
   ChannelContentDetails.fromJson(core.Map _json) {
     if (_json.containsKey("relatedPlaylists")) {
       relatedPlaylists = new ChannelContentDetailsRelatedPlaylists.fromJson(_json["relatedPlaylists"]);
     }
   }
 
-  core.Map toJson() {
-    var _json = new core.Map();
+  core.Map<core.String, core.Object> toJson() {
+    final core.Map<core.String, core.Object> _json = new core.Map<core.String, core.Object>();
     if (relatedPlaylists != null) {
       _json["relatedPlaylists"] = (relatedPlaylists).toJson();
     }
     return _json;
   }
 }
 
 /**
  * The contentOwnerDetails object encapsulates channel data that is relevant for
  * YouTube Partners linked with the channel.
@@ skipping 11 matching lines @@
 
   ChannelContentOwnerDetails.fromJson(core.Map _json) {
     if (_json.containsKey("contentOwner")) {
       contentOwner = _json["contentOwner"];
     }
     if (_json.containsKey("timeLinked")) {
       timeLinked = core.DateTime.parse(_json["timeLinked"]);
     }
   }
 
-  core.Map toJson() {
-    var _json = new core.Map();
+  core.Map<core.String, core.Object> toJson() {
+    final core.Map<core.String, core.Object> _json = new core.Map<core.String, core.Object>();
     if (contentOwner != null) {
       _json["contentOwner"] = contentOwner;
     }
     if (timeLinked != null) {
       _json["timeLinked"] = (timeLinked).toIso8601String();
     }
     return _json;
   }
 }
 
@@ skipping 26 matching lines @@
 
   ChannelConversionPing.fromJson(core.Map _json) {
     if (_json.containsKey("context")) {
       context = _json["context"];
     }
     if (_json.containsKey("conversionUrl")) {
       conversionUrl = _json["conversionUrl"];
     }
   }
 
-  core.Map toJson() {
-    var _json = new core.Map();
+  core.Map<core.String, core.Object> toJson() {
+    final core.Map<core.String, core.Object> _json = new core.Map<core.String, core.Object>();
     if (context != null) {
       _json["context"] = context;
     }
     if (conversionUrl != null) {
       _json["conversionUrl"] = conversionUrl;
     }
     return _json;
   }
 }
 
@@ skipping 10 matching lines @@
   core.List<ChannelConversionPing> pings;
 
   ChannelConversionPings();
 
   ChannelConversionPings.fromJson(core.Map _json) {
     if (_json.containsKey("pings")) {
       pings = _json["pings"].map((value) => new ChannelConversionPing.fromJson(value)).toList();
     }
   }
 
-  core.Map toJson() {
-    var _json = new core.Map();
+  core.Map<core.String, core.Object> toJson() {
+    final core.Map<core.String, core.Object> _json = new core.Map<core.String, core.Object>();
     if (pings != null) {
       _json["pings"] = pings.map((value) => (value).toJson()).toList();
     }
     return _json;
   }
 }
 
 class ChannelListResponse {
   /** Etag of this resource. */
   core.String etag;
@@ skipping 46 matching lines @@
       prevPageToken = _json["prevPageToken"];
     }
     if (_json.containsKey("tokenPagination")) {
       tokenPagination = new TokenPagination.fromJson(_json["tokenPagination"]);
     }
     if (_json.containsKey("visitorId")) {
       visitorId = _json["visitorId"];
     }
   }
 
-  core.Map toJson() {
-    var _json = new core.Map();
+  core.Map<core.String, core.Object> toJson() {
+    final core.Map<core.String, core.Object> _json = new core.Map<core.String, core.Object>();
     if (etag != null) {
       _json["etag"] = etag;
     }
     if (eventId != null) {
       _json["eventId"] = eventId;
     }
     if (items != null) {
       _json["items"] = items.map((value) => (value).toJson()).toList();
     }
     if (kind != null) {
@@ skipping 29 matching lines @@
 
   ChannelLocalization.fromJson(core.Map _json) {
     if (_json.containsKey("description")) {
       description = _json["description"];
     }
     if (_json.containsKey("title")) {
       title = _json["title"];
     }
   }
 
-  core.Map toJson() {
-    var _json = new core.Map();
+  core.Map<core.String, core.Object> toJson() {
+    final core.Map<core.String, core.Object> _json = new core.Map<core.String, core.Object>();
     if (description != null) {
       _json["description"] = description;
     }
     if (title != null) {
       _json["title"] = title;
     }
     return _json;
   }
 }
 
@@ skipping 17 matching lines @@
       channelUrl = _json["channelUrl"];
     }
     if (_json.containsKey("displayName")) {
       displayName = _json["displayName"];
     }
     if (_json.containsKey("profileImageUrl")) {
       profileImageUrl = _json["profileImageUrl"];
     }
   }
 
-  core.Map toJson() {
-    var _json = new core.Map();
+  core.Map<core.String, core.Object> toJson() {
+    final core.Map<core.String, core.Object> _json = new core.Map<core.String, core.Object>();
     if (channelId != null) {
       _json["channelId"] = channelId;
     }
     if (channelUrl != null) {
       _json["channelUrl"] = channelUrl;
     }
     if (displayName != null) {
       _json["displayName"] = displayName;
     }
     if (profileImageUrl != null) {
@@ skipping 40 matching lines @@
     if (_json.containsKey("etag")) {
       etag = _json["etag"];
     }
     if (_json.containsKey("id")) {
       id = _json["id"];
     }
     if (_json.containsKey("kind")) {
       kind = _json["kind"];
     }
     if (_json.containsKey("localizations")) {
-      localizations = commons.mapMap(_json["localizations"], (item) => new ChannelSectionLocalization.fromJson(item));
+      localizations = commons.mapMap<core.Map<core.String, core.Object>, ChannelSectionLocalization>(_json["localizations"], (core.Map<core.String, core.Object> item) => new ChannelSectionLocalization.fromJson(item));
     }
     if (_json.containsKey("snippet")) {
       snippet = new ChannelSectionSnippet.fromJson(_json["snippet"]);
     }
     if (_json.containsKey("targeting")) {
       targeting = new ChannelSectionTargeting.fromJson(_json["targeting"]);
     }
   }
 
-  core.Map toJson() {
-    var _json = new core.Map();
+  core.Map<core.String, core.Object> toJson() {
+    final core.Map<core.String, core.Object> _json = new core.Map<core.String, core.Object>();
     if (contentDetails != null) {
       _json["contentDetails"] = (contentDetails).toJson();
     }
     if (etag != null) {
       _json["etag"] = etag;
     }
     if (id != null) {
       _json["id"] = id;
     }
     if (kind != null) {
       _json["kind"] = kind;
     }
     if (localizations != null) {
-      _json["localizations"] = commons.mapMap(localizations, (item) => (item).toJson());
+      _json["localizations"] = commons.mapMap<ChannelSectionLocalization, core.Map<core.String, core.Object>>(localizations, (ChannelSectionLocalization item) => (item).toJson());
     }
     if (snippet != null) {
       _json["snippet"] = (snippet).toJson();
     }
     if (targeting != null) {
       _json["targeting"] = (targeting).toJson();
     }
     return _json;
   }
 }
@@ skipping 12 matching lines @@
 
   ChannelSectionContentDetails.fromJson(core.Map _json) {
     if (_json.containsKey("channels")) {
       channels = _json["channels"];
     }
     if (_json.containsKey("playlists")) {
       playlists = _json["playlists"];
     }
   }
 
-  core.Map toJson() {
-    var _json = new core.Map();
+  core.Map<core.String, core.Object> toJson() {
+    final core.Map<core.String, core.Object> _json = new core.Map<core.String, core.Object>();
     if (channels != null) {
       _json["channels"] = channels;
     }
     if (playlists != null) {
       _json["playlists"] = playlists;
     }
     return _json;
   }
 }
 
@@ skipping 25 matching lines @@
       items = _json["items"].map((value) => new ChannelSection.fromJson(value)).toList();
     }
     if (_json.containsKey("kind")) {
       kind = _json["kind"];
     }
     if (_json.containsKey("visitorId")) {
       visitorId = _json["visitorId"];
     }
   }
 
-  core.Map toJson() {
-    var _json = new core.Map();
+  core.Map<core.String, core.Object> toJson() {
+    final core.Map<core.String, core.Object> _json = new core.Map<core.String, core.Object>();
     if (etag != null) {
       _json["etag"] = etag;
     }
     if (eventId != null) {
       _json["eventId"] = eventId;
     }
     if (items != null) {
       _json["items"] = items.map((value) => (value).toJson()).toList();
     }
     if (kind != null) {
@@ skipping 12 matching lines @@
   core.String title;
 
   ChannelSectionLocalization();
 
   ChannelSectionLocalization.fromJson(core.Map _json) {
     if (_json.containsKey("title")) {
       title = _json["title"];
     }
   }
 
-  core.Map toJson() {
-    var _json = new core.Map();
+  core.Map<core.String, core.Object> toJson() {
+    final core.Map<core.String, core.Object> _json = new core.Map<core.String, core.Object>();
     if (title != null) {
       _json["title"] = title;
     }
     return _json;
   }
 }
 
 /**
  * Basic details about a channel section, including title, style and position.
  */
@@ skipping 63 matching lines @@
       style = _json["style"];
     }
     if (_json.containsKey("title")) {
       title = _json["title"];
     }
     if (_json.containsKey("type")) {
       type = _json["type"];
     }
   }
 
-  core.Map toJson() {
-    var _json = new core.Map();
+  core.Map<core.String, core.Object> toJson() {
+    final core.Map<core.String, core.Object> _json = new core.Map<core.String, core.Object>();
     if (channelId != null) {
       _json["channelId"] = channelId;
     }
     if (defaultLanguage != null) {
       _json["defaultLanguage"] = defaultLanguage;
     }
     if (localized != null) {
       _json["localized"] = (localized).toJson();
     }
     if (position != null) {
@@ skipping 28 matching lines @@
       countries = _json["countries"];
     }
     if (_json.containsKey("languages")) {
       languages = _json["languages"];
     }
     if (_json.containsKey("regions")) {
       regions = _json["regions"];
     }
   }
 
-  core.Map toJson() {
-    var _json = new core.Map();
+  core.Map<core.String, core.Object> toJson() {
+    final core.Map<core.String, core.Object> _json = new core.Map<core.String, core.Object>();
     if (countries != null) {
       _json["countries"] = countries;
     }
     if (languages != null) {
       _json["languages"] = languages;
     }
     if (regions != null) {
       _json["regions"] = regions;
     }
     return _json;
@@ skipping 76 matching lines @@
       title = _json["title"];
     }
     if (_json.containsKey("trackingAnalyticsAccountId")) {
       trackingAnalyticsAccountId = _json["trackingAnalyticsAccountId"];
     }
     if (_json.containsKey("unsubscribedTrailer")) {
       unsubscribedTrailer = _json["unsubscribedTrailer"];
     }
   }
 
-  core.Map toJson() {
-    var _json = new core.Map();
+  core.Map<core.String, core.Object> toJson() {
+    final core.Map<core.String, core.Object> _json = new core.Map<core.String, core.Object>();
     if (country != null) {
       _json["country"] = country;
     }
     if (defaultLanguage != null) {
       _json["defaultLanguage"] = defaultLanguage;
     }
     if (defaultTab != null) {
       _json["defaultTab"] = defaultTab;
     }
     if (description != null) {
@@ skipping 84 matching lines @@
       publishedAt = core.DateTime.parse(_json["publishedAt"]);
     }
     if (_json.containsKey("thumbnails")) {
       thumbnails = new ThumbnailDetails.fromJson(_json["thumbnails"]);
     }
     if (_json.containsKey("title")) {
       title = _json["title"];
     }
   }
 
-  core.Map toJson() {
-    var _json = new core.Map();
+  core.Map<core.String, core.Object> toJson() {
+    final core.Map<core.String, core.Object> _json = new core.Map<core.String, core.Object>();
     if (country != null) {
       _json["country"] = country;
     }
     if (customUrl != null) {
       _json["customUrl"] = customUrl;
     }
     if (defaultLanguage != null) {
       _json["defaultLanguage"] = defaultLanguage;
     }
     if (description != null) {
@@ skipping 44 matching lines @@
       subscriberCount = _json["subscriberCount"];
     }
     if (_json.containsKey("videoCount")) {
       videoCount = _json["videoCount"];
     }
     if (_json.containsKey("viewCount")) {
       viewCount = _json["viewCount"];
     }
   }
 
-  core.Map toJson() {
-    var _json = new core.Map();
+  core.Map<core.String, core.Object> toJson() {
+    final core.Map<core.String, core.Object> _json = new core.Map<core.String, core.Object>();
     if (commentCount != null) {
       _json["commentCount"] = commentCount;
     }
     if (hiddenSubscriberCount != null) {
       _json["hiddenSubscriberCount"] = hiddenSubscriberCount;
     }
     if (subscriberCount != null) {
       _json["subscriberCount"] = subscriberCount;
     }
     if (videoCount != null) {
@@ skipping 38 matching lines @@
       isLinked = _json["isLinked"];
     }
     if (_json.containsKey("longUploadsStatus")) {
       longUploadsStatus = _json["longUploadsStatus"];
     }
     if (_json.containsKey("privacyStatus")) {
       privacyStatus = _json["privacyStatus"];
     }
   }
 
-  core.Map toJson() {
-    var _json = new core.Map();
+  core.Map<core.String, core.Object> toJson() {
+    final core.Map<core.String, core.Object> _json = new core.Map<core.String, core.Object>();
     if (isLinked != null) {
       _json["isLinked"] = isLinked;
     }
     if (longUploadsStatus != null) {
       _json["longUploadsStatus"] = longUploadsStatus;
     }
     if (privacyStatus != null) {
       _json["privacyStatus"] = privacyStatus;
     }
     return _json;
@@ skipping 14 matching lines @@
 
   ChannelTopicDetails.fromJson(core.Map _json) {
     if (_json.containsKey("topicCategories")) {
       topicCategories = _json["topicCategories"];
     }
     if (_json.containsKey("topicIds")) {
       topicIds = _json["topicIds"];
     }
   }
 
-  core.Map toJson() {
-    var _json = new core.Map();
+  core.Map<core.String, core.Object> toJson() {
+    final core.Map<core.String, core.Object> _json = new core.Map<core.String, core.Object>();
     if (topicCategories != null) {
       _json["topicCategories"] = topicCategories;
     }
     if (topicIds != null) {
       _json["topicIds"] = topicIds;
     }
     return _json;
   }
 }
 
@@ skipping 21 matching lines @@
       id = _json["id"];
     }
     if (_json.containsKey("kind")) {
       kind = _json["kind"];
     }
     if (_json.containsKey("snippet")) {
       snippet = new CommentSnippet.fromJson(_json["snippet"]);
     }
   }
 
-  core.Map toJson() {
-    var _json = new core.Map();
+  core.Map<core.String, core.Object> toJson() {
+    final core.Map<core.String, core.Object> _json = new core.Map<core.String, core.Object>();
     if (etag != null) {
       _json["etag"] = etag;
     }
     if (id != null) {
       _json["id"] = id;
     }
     if (kind != null) {
       _json["kind"] = kind;
     }
     if (snippet != null) {
@@ skipping 47 matching lines @@
       pageInfo = new PageInfo.fromJson(_json["pageInfo"]);
     }
     if (_json.containsKey("tokenPagination")) {
       tokenPagination = new TokenPagination.fromJson(_json["tokenPagination"]);
     }
     if (_json.containsKey("visitorId")) {
       visitorId = _json["visitorId"];
     }
   }
 
-  core.Map toJson() {
-    var _json = new core.Map();
+  core.Map<core.String, core.Object> toJson() {
+    final core.Map<core.String, core.Object> _json = new core.Map<core.String, core.Object>();
     if (etag != null) {
       _json["etag"] = etag;
     }
     if (eventId != null) {
       _json["eventId"] = eventId;
     }
     if (items != null) {
       _json["items"] = items.map((value) => (value).toJson()).toList();
     }
     if (kind != null) {
@@ skipping 132 matching lines @@
       updatedAt = core.DateTime.parse(_json["updatedAt"]);
     }
     if (_json.containsKey("videoId")) {
       videoId = _json["videoId"];
     }
     if (_json.containsKey("viewerRating")) {
       viewerRating = _json["viewerRating"];
     }
   }
 
-  core.Map toJson() {
-    var _json = new core.Map();
+  core.Map<core.String, core.Object> toJson() {
+    final core.Map<core.String, core.Object> _json = new core.Map<core.String, core.Object>();
     if (authorChannelId != null) {
       _json["authorChannelId"] = authorChannelId;
     }
     if (authorChannelUrl != null) {
       _json["authorChannelUrl"] = authorChannelUrl;
     }
     if (authorDisplayName != null) {
       _json["authorDisplayName"] = authorDisplayName;
     }
     if (authorProfileImageUrl != null) {
@@ skipping 75 matching lines @@
       kind = _json["kind"];
     }
     if (_json.containsKey("replies")) {
       replies = new CommentThreadReplies.fromJson(_json["replies"]);
     }
     if (_json.containsKey("snippet")) {
       snippet = new CommentThreadSnippet.fromJson(_json["snippet"]);
     }
   }
 
-  core.Map toJson() {
-    var _json = new core.Map();
+  core.Map<core.String, core.Object> toJson() {
+    final core.Map<core.String, core.Object> _json = new core.Map<core.String, core.Object>();
     if (etag != null) {
       _json["etag"] = etag;
     }
     if (id != null) {
       _json["id"] = id;
     }
     if (kind != null) {
       _json["kind"] = kind;
     }
     if (replies != null) {
@@ skipping 50 matching lines @@
       pageInfo = new PageInfo.fromJson(_json["pageInfo"]);
     }
     if (_json.containsKey("tokenPagination")) {
       tokenPagination = new TokenPagination.fromJson(_json["tokenPagination"]);
     }
     if (_json.containsKey("visitorId")) {
       visitorId = _json["visitorId"];
     }
   }
 
-  core.Map toJson() {
-    var _json = new core.Map();
+  core.Map<core.String, core.Object> toJson() {
+    final core.Map<core.String, core.Object> _json = new core.Map<core.String, core.Object>();
     if (etag != null) {
       _json["etag"] = etag;
     }
     if (eventId != null) {
       _json["eventId"] = eventId;
     }
     if (items != null) {
       _json["items"] = items.map((value) => (value).toJson()).toList();
     }
     if (kind != null) {
@@ skipping 25 matching lines @@
   core.List<Comment> comments;
 
   CommentThreadReplies();
 
   CommentThreadReplies.fromJson(core.Map _json) {
     if (_json.containsKey("comments")) {
       comments = _json["comments"].map((value) => new Comment.fromJson(value)).toList();
     }
   }
 
-  core.Map toJson() {
-    var _json = new core.Map();
+  core.Map<core.String, core.Object> toJson() {
+    final core.Map<core.String, core.Object> _json = new core.Map<core.String, core.Object>();
     if (comments != null) {
       _json["comments"] = comments.map((value) => (value).toJson()).toList();
     }
     return _json;
   }
 }
 
 /** Basic details about a comment thread. */
 class CommentThreadSnippet {
   /**
@@ skipping 38 matching lines @@
       topLevelComment = new Comment.fromJson(_json["topLevelComment"]);
     }
     if (_json.containsKey("totalReplyCount")) {
       totalReplyCount = _json["totalReplyCount"];
     }
     if (_json.containsKey("videoId")) {
       videoId = _json["videoId"];
     }
   }
 
-  core.Map toJson() {
-    var _json = new core.Map();
+  core.Map<core.String, core.Object> toJson() {
+    final core.Map<core.String, core.Object> _json = new core.Map<core.String, core.Object>();
     if (canReply != null) {
       _json["canReply"] = canReply;
     }
     if (channelId != null) {
       _json["channelId"] = channelId;
     }
     if (isPublic != null) {
       _json["isPublic"] = isPublic;
     }
     if (topLevelComment != null) {
@@ skipping 1034 matching lines @@
       smsaRating = _json["smsaRating"];
     }
     if (_json.containsKey("tvpgRating")) {
       tvpgRating = _json["tvpgRating"];
     }
     if (_json.containsKey("ytRating")) {
       ytRating = _json["ytRating"];
     }
   }
 
-  core.Map toJson() {
-    var _json = new core.Map();
+  core.Map<core.String, core.Object> toJson() {
+    final core.Map<core.String, core.Object> _json = new core.Map<core.String, core.Object>();
     if (acbRating != null) {
       _json["acbRating"] = acbRating;
     }
     if (agcomRating != null) {
       _json["agcomRating"] = agcomRating;
     }
     if (anatelRating != null) {
       _json["anatelRating"] = anatelRating;
     }
     if (bbfcRating != null) {
@@ skipping 225 matching lines @@
       id = _json["id"];
     }
     if (_json.containsKey("kind")) {
       kind = _json["kind"];
     }
     if (_json.containsKey("snippet")) {
       snippet = new FanFundingEventSnippet.fromJson(_json["snippet"]);
     }
   }
 
-  core.Map toJson() {
-    var _json = new core.Map();
+  core.Map<core.String, core.Object> toJson() {
+    final core.Map<core.String, core.Object> _json = new core.Map<core.String, core.Object>();
     if (etag != null) {
       _json["etag"] = etag;
     }
     if (id != null) {
       _json["id"] = id;
     }
     if (kind != null) {
       _json["kind"] = kind;
     }
     if (snippet != null) {
@@ skipping 47 matching lines @@
       pageInfo = new PageInfo.fromJson(_json["pageInfo"]);
     }
     if (_json.containsKey("tokenPagination")) {
       tokenPagination = new TokenPagination.fromJson(_json["tokenPagination"]);
     }
     if (_json.containsKey("visitorId")) {
       visitorId = _json["visitorId"];
     }
   }
 
-  core.Map toJson() {
-    var _json = new core.Map();
+  core.Map<core.String, core.Object> toJson() {
+    final core.Map<core.String, core.Object> _json = new core.Map<core.String, core.Object>();
     if (etag != null) {
       _json["etag"] = etag;
     }
     if (eventId != null) {
       _json["eventId"] = eventId;
     }
     if (items != null) {
       _json["items"] = items.map((value) => (value).toJson()).toList();
     }
     if (kind != null) {
@@ skipping 61 matching lines @@
       currency = _json["currency"];
     }
     if (_json.containsKey("displayString")) {
       displayString = _json["displayString"];
     }
     if (_json.containsKey("supporterDetails")) {
       supporterDetails = new ChannelProfileDetails.fromJson(_json["supporterDetails"]);
     }
   }
 
-  core.Map toJson() {
-    var _json = new core.Map();
+  core.Map<core.String, core.Object> toJson() {
+    final core.Map<core.String, core.Object> _json = new core.Map<core.String, core.Object>();
     if (amountMicros != null) {
       _json["amountMicros"] = amountMicros;
     }
     if (channelId != null) {
       _json["channelId"] = channelId;
     }
     if (commentText != null) {
       _json["commentText"] = commentText;
     }
     if (createdAt != null) {
@@ skipping 28 matching lines @@
       altitude = _json["altitude"];
     }
     if (_json.containsKey("latitude")) {
       latitude = _json["latitude"];
     }
     if (_json.containsKey("longitude")) {
       longitude = _json["longitude"];
     }
   }
 
-  core.Map toJson() {
-    var _json = new core.Map();
+  core.Map<core.String, core.Object> toJson() {
+    final core.Map<core.String, core.Object> _json = new core.Map<core.String, core.Object>();
     if (altitude != null) {
       _json["altitude"] = altitude;
     }
     if (latitude != null) {
       _json["latitude"] = latitude;
     }
     if (longitude != null) {
       _json["longitude"] = longitude;
     }
     return _json;
@@ skipping 33 matching lines @@
       id = _json["id"];
     }
     if (_json.containsKey("kind")) {
       kind = _json["kind"];
     }
     if (_json.containsKey("snippet")) {
       snippet = new GuideCategorySnippet.fromJson(_json["snippet"]);
     }
   }
 
-  core.Map toJson() {
-    var _json = new core.Map();
+  core.Map<core.String, core.Object> toJson() {
+    final core.Map<core.String, core.Object> _json = new core.Map<core.String, core.Object>();
     if (etag != null) {
       _json["etag"] = etag;
     }
     if (id != null) {
       _json["id"] = id;
     }
     if (kind != null) {
       _json["kind"] = kind;
     }
     if (snippet != null) {
@@ skipping 59 matching lines @@
       prevPageToken = _json["prevPageToken"];
     }
     if (_json.containsKey("tokenPagination")) {
       tokenPagination = new TokenPagination.fromJson(_json["tokenPagination"]);
     }
     if (_json.containsKey("visitorId")) {
       visitorId = _json["visitorId"];
     }
   }
 
-  core.Map toJson() {
-    var _json = new core.Map();
+  core.Map<core.String, core.Object> toJson() {
+    final core.Map<core.String, core.Object> _json = new core.Map<core.String, core.Object>();
     if (etag != null) {
       _json["etag"] = etag;
     }
     if (eventId != null) {
       _json["eventId"] = eventId;
     }
     if (items != null) {
       _json["items"] = items.map((value) => (value).toJson()).toList();
     }
     if (kind != null) {
@@ skipping 28 matching lines @@
 
   GuideCategorySnippet.fromJson(core.Map _json) {
     if (_json.containsKey("channelId")) {
       channelId = _json["channelId"];
     }
     if (_json.containsKey("title")) {
       title = _json["title"];
     }
   }
 
-  core.Map toJson() {
-    var _json = new core.Map();
+  core.Map<core.String, core.Object> toJson() {
+    final core.Map<core.String, core.Object> _json = new core.Map<core.String, core.Object>();
     if (channelId != null) {
       _json["channelId"] = channelId;
     }
     if (title != null) {
       _json["title"] = title;
     }
     return _json;
   }
 }
 
@@ skipping 27 matching lines @@
       id = _json["id"];
     }
     if (_json.containsKey("kind")) {
       kind = _json["kind"];
     }
     if (_json.containsKey("snippet")) {
       snippet = new I18nLanguageSnippet.fromJson(_json["snippet"]);
     }
   }
 
-  core.Map toJson() {
-    var _json = new core.Map();
+  core.Map<core.String, core.Object> toJson() {
+    final core.Map<core.String, core.Object> _json = new core.Map<core.String, core.Object>();
     if (etag != null) {
       _json["etag"] = etag;
     }
     if (id != null) {
       _json["id"] = id;
     }
     if (kind != null) {
       _json["kind"] = kind;
     }
     if (snippet != null) {
@@ skipping 34 matching lines @@
       items = _json["items"].map((value) => new I18nLanguage.fromJson(value)).toList();
     }
     if (_json.containsKey("kind")) {
       kind = _json["kind"];
     }
     if (_json.containsKey("visitorId")) {
       visitorId = _json["visitorId"];
     }
   }
 
-  core.Map toJson() {
-    var _json = new core.Map();
+  core.Map<core.String, core.Object> toJson() {
+    final core.Map<core.String, core.Object> _json = new core.Map<core.String, core.Object>();
     if (etag != null) {
       _json["etag"] = etag;
     }
     if (eventId != null) {
       _json["eventId"] = eventId;
     }
     if (items != null) {
       _json["items"] = items.map((value) => (value).toJson()).toList();
     }
     if (kind != null) {
@@ skipping 20 matching lines @@
 
   I18nLanguageSnippet.fromJson(core.Map _json) {
     if (_json.containsKey("hl")) {
       hl = _json["hl"];
     }
     if (_json.containsKey("name")) {
       name = _json["name"];
     }
   }
 
-  core.Map toJson() {
-    var _json = new core.Map();
+  core.Map<core.String, core.Object> toJson() {
+    final core.Map<core.String, core.Object> _json = new core.Map<core.String, core.Object>();
     if (hl != null) {
       _json["hl"] = hl;
     }
     if (name != null) {
       _json["name"] = name;
     }
     return _json;
   }
 }
 
@@ skipping 24 matching lines @@
       id = _json["id"];
     }
     if (_json.containsKey("kind")) {
       kind = _json["kind"];
     }
     if (_json.containsKey("snippet")) {
       snippet = new I18nRegionSnippet.fromJson(_json["snippet"]);
     }
   }
 
-  core.Map toJson() {
-    var _json = new core.Map();
+  core.Map<core.String, core.Object> toJson() {
+    final core.Map<core.String, core.Object> _json = new core.Map<core.String, core.Object>();
     if (etag != null) {
       _json["etag"] = etag;
     }
     if (id != null) {
       _json["id"] = id;
     }
     if (kind != null) {
       _json["kind"] = kind;
     }
     if (snippet != null) {
@@ skipping 34 matching lines @@
       items = _json["items"].map((value) => new I18nRegion.fromJson(value)).toList();
     }
     if (_json.containsKey("kind")) {
       kind = _json["kind"];
     }
     if (_json.containsKey("visitorId")) {
       visitorId = _json["visitorId"];
     }
   }
 
-  core.Map toJson() {
-    var _json = new core.Map();
+  core.Map<core.String, core.Object> toJson() {
+    final core.Map<core.String, core.Object> _json = new core.Map<core.String, core.Object>();
     if (etag != null) {
       _json["etag"] = etag;
     }
     if (eventId != null) {
       _json["eventId"] = eventId;
     }
     if (items != null) {
       _json["items"] = items.map((value) => (value).toJson()).toList();
     }
     if (kind != null) {
@@ skipping 20 matching lines @@
 
   I18nRegionSnippet.fromJson(core.Map _json) {
     if (_json.containsKey("gl")) {
       gl = _json["gl"];
     }
     if (_json.containsKey("name")) {
       name = _json["name"];
     }
   }
 
-  core.Map toJson() {
-    var _json = new core.Map();
+  core.Map<core.String, core.Object> toJson() {
+    final core.Map<core.String, core.Object> _json = new core.Map<core.String, core.Object>();
     if (gl != null) {
       _json["gl"] = gl;
     }
     if (name != null) {
       _json["name"] = name;
     }
     return _json;
   }
 }
 
@@ skipping 127 matching lines @@
       smallBrandedBannerImageUrl = new LocalizedProperty.fromJson(_json["smallBrandedBannerImageUrl"]);
     }
     if (_json.containsKey("trackingImageUrl")) {
       trackingImageUrl = _json["trackingImageUrl"];
     }
     if (_json.containsKey("watchIconImageUrl")) {
       watchIconImageUrl = _json["watchIconImageUrl"];
     }
   }
 
-  core.Map toJson() {
-    var _json = new core.Map();
+  core.Map<core.String, core.Object> toJson() {
+    final core.Map<core.String, core.Object> _json = new core.Map<core.String, core.Object>();
     if (backgroundImageUrl != null) {
       _json["backgroundImageUrl"] = (backgroundImageUrl).toJson();
     }
     if (bannerExternalUrl != null) {
       _json["bannerExternalUrl"] = bannerExternalUrl;
     }
     if (bannerImageUrl != null) {
       _json["bannerImageUrl"] = bannerImageUrl;
     }
     if (bannerMobileExtraHdImageUrl != null) {
@@ skipping 86 matching lines @@
       backupIngestionAddress = _json["backupIngestionAddress"];
     }
     if (_json.containsKey("ingestionAddress")) {
       ingestionAddress = _json["ingestionAddress"];
     }
     if (_json.containsKey("streamName")) {
       streamName = _json["streamName"];
     }
   }
 
-  core.Map toJson() {
-    var _json = new core.Map();
+  core.Map<core.String, core.Object> toJson() {
+    final core.Map<core.String, core.Object> _json = new core.Map<core.String, core.Object>();
     if (backupIngestionAddress != null) {
       _json["backupIngestionAddress"] = backupIngestionAddress;
     }
     if (ingestionAddress != null) {
       _json["ingestionAddress"] = ingestionAddress;
     }
     if (streamName != null) {
       _json["streamName"] = streamName;
     }
     return _json;
@@ skipping 27 matching lines @@
       position = new InvideoPosition.fromJson(_json["position"]);
     }
     if (_json.containsKey("targetChannelId")) {
       targetChannelId = _json["targetChannelId"];
     }
     if (_json.containsKey("timing")) {
       timing = new InvideoTiming.fromJson(_json["timing"]);
     }
   }
 
-  core.Map toJson() {
-    var _json = new core.Map();
+  core.Map<core.String, core.Object> toJson() {
+    final core.Map<core.String, core.Object> _json = new core.Map<core.String, core.Object>();
     if (imageBytes != null) {
       _json["imageBytes"] = imageBytes;
     }
     if (imageUrl != null) {
       _json["imageUrl"] = imageUrl;
     }
     if (position != null) {
       _json["position"] = (position).toJson();
     }
     if (targetChannelId != null) {
@@ skipping 31 matching lines @@
 
   InvideoPosition.fromJson(core.Map _json) {
     if (_json.containsKey("cornerPosition")) {
       cornerPosition = _json["cornerPosition"];
     }
     if (_json.containsKey("type")) {
       type = _json["type"];
     }
   }
 
-  core.Map toJson() {
-    var _json = new core.Map();
+  core.Map<core.String, core.Object> toJson() {
+    final core.Map<core.String, core.Object> _json = new core.Map<core.String, core.Object>();
     if (cornerPosition != null) {
       _json["cornerPosition"] = cornerPosition;
     }
     if (type != null) {
       _json["type"] = type;
     }
     return _json;
   }
 }
 
@@ skipping 33 matching lines @@
       items = _json["items"].map((value) => new PromotedItem.fromJson(value)).toList();
     }
     if (_json.containsKey("position")) {
       position = new InvideoPosition.fromJson(_json["position"]);
     }
     if (_json.containsKey("useSmartTiming")) {
       useSmartTiming = _json["useSmartTiming"];
     }
   }
 
-  core.Map toJson() {
-    var _json = new core.Map();
+  core.Map<core.String, core.Object> toJson() {
+    final core.Map<core.String, core.Object> _json = new core.Map<core.String, core.Object>();
     if (defaultTiming != null) {
       _json["defaultTiming"] = (defaultTiming).toJson();
     }
     if (items != null) {
       _json["items"] = items.map((value) => (value).toJson()).toList();
     }
     if (position != null) {
       _json["position"] = (position).toJson();
     }
     if (useSmartTiming != null) {
@@ skipping 34 matching lines @@
       durationMs = _json["durationMs"];
     }
     if (_json.containsKey("offsetMs")) {
       offsetMs = _json["offsetMs"];
     }
     if (_json.containsKey("type")) {
       type = _json["type"];
     }
   }
 
-  core.Map toJson() {
-    var _json = new core.Map();
+  core.Map<core.String, core.Object> toJson() {
+    final core.Map<core.String, core.Object> _json = new core.Map<core.String, core.Object>();
     if (durationMs != null) {
       _json["durationMs"] = durationMs;
     }
     if (offsetMs != null) {
       _json["offsetMs"] = offsetMs;
     }
     if (type != null) {
       _json["type"] = type;
     }
     return _json;
   }
 }
 
 class LanguageTag {
   core.String value;
 
   LanguageTag();
 
   LanguageTag.fromJson(core.Map _json) {
     if (_json.containsKey("value")) {
       value = _json["value"];
     }
   }
 
-  core.Map toJson() {
-    var _json = new core.Map();
+  core.Map<core.String, core.Object> toJson() {
+    final core.Map<core.String, core.Object> _json = new core.Map<core.String, core.Object>();
     if (value != null) {
       _json["value"] = value;
     }
     return _json;
   }
 }
 
 /**
  * A liveBroadcast resource represents an event that will be streamed, via live
  * video, on YouTube.
@@ skipping 53 matching lines @@
       statistics = new LiveBroadcastStatistics.fromJson(_json["statistics"]);
     }
     if (_json.containsKey("status")) {
       status = new LiveBroadcastStatus.fromJson(_json["status"]);
     }
     if (_json.containsKey("topicDetails")) {
       topicDetails = new LiveBroadcastTopicDetails.fromJson(_json["topicDetails"]);
     }
   }
 
-  core.Map toJson() {
-    var _json = new core.Map();
+  core.Map<core.String, core.Object> toJson() {
+    final core.Map<core.String, core.Object> _json = new core.Map<core.String, core.Object>();
     if (contentDetails != null) {
       _json["contentDetails"] = (contentDetails).toJson();
     }
     if (etag != null) {
       _json["etag"] = etag;
     }
     if (id != null) {
       _json["id"] = id;
     }
     if (kind != null) {
@@ skipping 136 matching lines @@
       projection = _json["projection"];
     }
     if (_json.containsKey("recordFromStart")) {
       recordFromStart = _json["recordFromStart"];
     }
     if (_json.containsKey("startWithSlate")) {
       startWithSlate = _json["startWithSlate"];
     }
   }
 
-  core.Map toJson() {
-    var _json = new core.Map();
+  core.Map<core.String, core.Object> toJson() {
+    final core.Map<core.String, core.Object> _json = new core.Map<core.String, core.Object>();
     if (boundStreamId != null) {
       _json["boundStreamId"] = boundStreamId;
     }
     if (boundStreamLastUpdateTimeMs != null) {
       _json["boundStreamLastUpdateTimeMs"] = (boundStreamLastUpdateTimeMs).toIso8601String();
     }
     if (closedCaptionsType != null) {
       _json["closedCaptionsType"] = closedCaptionsType;
     }
     if (enableClosedCaptions != null) {
@@ skipping 79 matching lines @@
       prevPageToken = _json["prevPageToken"];
     }
     if (_json.containsKey("tokenPagination")) {
       tokenPagination = new TokenPagination.fromJson(_json["tokenPagination"]);
     }
     if (_json.containsKey("visitorId")) {
       visitorId = _json["visitorId"];
     }
   }
 
-  core.Map toJson() {
-    var _json = new core.Map();
+  core.Map<core.String, core.Object> toJson() {
+    final core.Map<core.String, core.Object> _json = new core.Map<core.String, core.Object>();
     if (etag != null) {
       _json["etag"] = etag;
     }
     if (eventId != null) {
       _json["eventId"] = eventId;
     }
     if (items != null) {
       _json["items"] = items.map((value) => (value).toJson()).toList();
     }
     if (kind != null) {
@@ skipping 105 matching lines @@
       scheduledStartTime = core.DateTime.parse(_json["scheduledStartTime"]);
     }
     if (_json.containsKey("thumbnails")) {
       thumbnails = new ThumbnailDetails.fromJson(_json["thumbnails"]);
     }
     if (_json.containsKey("title")) {
       title = _json["title"];
     }
   }
 
-  core.Map toJson() {
-    var _json = new core.Map();
+  core.Map<core.String, core.Object> toJson() {
+    final core.Map<core.String, core.Object> _json = new core.Map<core.String, core.Object>();
     if (actualEndTime != null) {
       _json["actualEndTime"] = (actualEndTime).toIso8601String();
     }
     if (actualStartTime != null) {
       _json["actualStartTime"] = (actualStartTime).toIso8601String();
     }
     if (channelId != null) {
       _json["channelId"] = channelId;
     }
     if (description != null) {
@@ skipping 52 matching lines @@
 
   LiveBroadcastStatistics.fromJson(core.Map _json) {
     if (_json.containsKey("concurrentViewers")) {
       concurrentViewers = _json["concurrentViewers"];
     }
     if (_json.containsKey("totalChatCount")) {
       totalChatCount = _json["totalChatCount"];
     }
   }
 
-  core.Map toJson() {
-    var _json = new core.Map();
+  core.Map<core.String, core.Object> toJson() {
+    final core.Map<core.String, core.Object> _json = new core.Map<core.String, core.Object>();
     if (concurrentViewers != null) {
       _json["concurrentViewers"] = concurrentViewers;
     }
     if (totalChatCount != null) {
       _json["totalChatCount"] = totalChatCount;
     }
     return _json;
   }
 }
 
@@ skipping 54 matching lines @@
       liveBroadcastPriority = _json["liveBroadcastPriority"];
     }
     if (_json.containsKey("privacyStatus")) {
       privacyStatus = _json["privacyStatus"];
     }
     if (_json.containsKey("recordingStatus")) {
       recordingStatus = _json["recordingStatus"];
     }
   }
 
-  core.Map toJson() {
-    var _json = new core.Map();
+  core.Map<core.String, core.Object> toJson() {
+    final core.Map<core.String, core.Object> _json = new core.Map<core.String, core.Object>();
     if (lifeCycleStatus != null) {
       _json["lifeCycleStatus"] = lifeCycleStatus;
     }
     if (liveBroadcastPriority != null) {
       _json["liveBroadcastPriority"] = liveBroadcastPriority;
     }
     if (privacyStatus != null) {
       _json["privacyStatus"] = privacyStatus;
     }
     if (recordingStatus != null) {
@@ skipping 25 matching lines @@
       snippet = new LiveBroadcastTopicSnippet.fromJson(_json["snippet"]);
     }
     if (_json.containsKey("type")) {
       type = _json["type"];
     }
     if (_json.containsKey("unmatched")) {
       unmatched = _json["unmatched"];
     }
   }
 
-  core.Map toJson() {
-    var _json = new core.Map();
+  core.Map<core.String, core.Object> toJson() {
+    final core.Map<core.String, core.Object> _json = new core.Map<core.String, core.Object>();
     if (snippet != null) {
       _json["snippet"] = (snippet).toJson();
     }
     if (type != null) {
       _json["type"] = type;
     }
     if (unmatched != null) {
       _json["unmatched"] = unmatched;
     }
     return _json;
   }
 }
 
 class LiveBroadcastTopicDetails {
   core.List<LiveBroadcastTopic> topics;
 
   LiveBroadcastTopicDetails();
 
   LiveBroadcastTopicDetails.fromJson(core.Map _json) {
     if (_json.containsKey("topics")) {
       topics = _json["topics"].map((value) => new LiveBroadcastTopic.fromJson(value)).toList();
     }
   }
 
-  core.Map toJson() {
-    var _json = new core.Map();
+  core.Map<core.String, core.Object> toJson() {
+    final core.Map<core.String, core.Object> _json = new core.Map<core.String, core.Object>();
     if (topics != null) {
       _json["topics"] = topics.map((value) => (value).toJson()).toList();
     }
     return _json;
   }
 }
 
 class LiveBroadcastTopicSnippet {
   /** The name of the topic. */
   core.String name;
   /** The date at which the topic was released. Filled for types: videoGame */
   core.String releaseDate;
 
   LiveBroadcastTopicSnippet();
 
   LiveBroadcastTopicSnippet.fromJson(core.Map _json) {
     if (_json.containsKey("name")) {
       name = _json["name"];
     }
     if (_json.containsKey("releaseDate")) {
       releaseDate = _json["releaseDate"];
     }
   }
 
-  core.Map toJson() {
-    var _json = new core.Map();
+  core.Map<core.String, core.Object> toJson() {
+    final core.Map<core.String, core.Object> _json = new core.Map<core.String, core.Object>();
     if (name != null) {
       _json["name"] = name;
     }
     if (releaseDate != null) {
       _json["releaseDate"] = releaseDate;
     }
     return _json;
   }
 }
 
@@ skipping 21 matching lines @@
       id = _json["id"];
     }
     if (_json.containsKey("kind")) {
       kind = _json["kind"];
     }
     if (_json.containsKey("snippet")) {
       snippet = new LiveChatBanSnippet.fromJson(_json["snippet"]);
     }
   }
 
-  core.Map toJson() {
-    var _json = new core.Map();
+  core.Map<core.String, core.Object> toJson() {
+    final core.Map<core.String, core.Object> _json = new core.Map<core.String, core.Object>();
     if (etag != null) {
       _json["etag"] = etag;
     }
     if (id != null) {
       _json["id"] = id;
     }
     if (kind != null) {
       _json["kind"] = kind;
     }
     if (snippet != null) {
@@ skipping 27 matching lines @@
       bannedUserDetails = new ChannelProfileDetails.fromJson(_json["bannedUserDetails"]);
     }
     if (_json.containsKey("liveChatId")) {
       liveChatId = _json["liveChatId"];
     }
     if (_json.containsKey("type")) {
       type = _json["type"];
     }
   }
 
-  core.Map toJson() {
-    var _json = new core.Map();
+  core.Map<core.String, core.Object> toJson() {
+    final core.Map<core.String, core.Object> _json = new core.Map<core.String, core.Object>();
     if (banDurationSeconds != null) {
       _json["banDurationSeconds"] = banDurationSeconds;
     }
     if (bannedUserDetails != null) {
       _json["bannedUserDetails"] = (bannedUserDetails).toJson();
     }
     if (liveChatId != null) {
       _json["liveChatId"] = liveChatId;
     }
     if (type != null) {
@@ skipping 25 matching lines @@
       amountMicros = _json["amountMicros"];
     }
     if (_json.containsKey("currency")) {
       currency = _json["currency"];
     }
     if (_json.containsKey("userComment")) {
       userComment = _json["userComment"];
     }
   }
 
-  core.Map toJson() {
-    var _json = new core.Map();
+  core.Map<core.String, core.Object> toJson() {
+    final core.Map<core.String, core.Object> _json = new core.Map<core.String, core.Object>();
     if (amountDisplayString != null) {
       _json["amountDisplayString"] = amountDisplayString;
     }
     if (amountMicros != null) {
       _json["amountMicros"] = amountMicros;
     }
     if (currency != null) {
       _json["currency"] = currency;
     }
     if (userComment != null) {
@@ skipping 37 matching lines @@
       id = _json["id"];
     }
     if (_json.containsKey("kind")) {
       kind = _json["kind"];
     }
     if (_json.containsKey("snippet")) {
       snippet = new LiveChatMessageSnippet.fromJson(_json["snippet"]);
     }
   }
 
-  core.Map toJson() {
-    var _json = new core.Map();
+  core.Map<core.String, core.Object> toJson() {
+    final core.Map<core.String, core.Object> _json = new core.Map<core.String, core.Object>();
     if (authorDetails != null) {
       _json["authorDetails"] = (authorDetails).toJson();
     }
     if (etag != null) {
       _json["etag"] = etag;
     }
     if (id != null) {
       _json["id"] = id;
     }
     if (kind != null) {
@@ skipping 46 matching lines @@
       isChatSponsor = _json["isChatSponsor"];
     }
     if (_json.containsKey("isVerified")) {
       isVerified = _json["isVerified"];
     }
     if (_json.containsKey("profileImageUrl")) {
       profileImageUrl = _json["profileImageUrl"];
     }
   }
 
-  core.Map toJson() {
-    var _json = new core.Map();
+  core.Map<core.String, core.Object> toJson() {
+    final core.Map<core.String, core.Object> _json = new core.Map<core.String, core.Object>();
     if (channelId != null) {
       _json["channelId"] = channelId;
     }
     if (channelUrl != null) {
       _json["channelUrl"] = channelUrl;
     }
     if (displayName != null) {
       _json["displayName"] = displayName;
     }
     if (isChatModerator != null) {
@@ skipping 19 matching lines @@
   core.String deletedMessageId;
 
   LiveChatMessageDeletedDetails();
 
   LiveChatMessageDeletedDetails.fromJson(core.Map _json) {
     if (_json.containsKey("deletedMessageId")) {
       deletedMessageId = _json["deletedMessageId"];
     }
   }
 
-  core.Map toJson() {
-    var _json = new core.Map();
+  core.Map<core.String, core.Object> toJson() {
+    final core.Map<core.String, core.Object> _json = new core.Map<core.String, core.Object>();
     if (deletedMessageId != null) {
       _json["deletedMessageId"] = deletedMessageId;
     }
     return _json;
   }
 }
 
 class LiveChatMessageListResponse {
   /** Etag of this resource. */
   core.String etag;
@@ skipping 51 matching lines @@
       pollingIntervalMillis = _json["pollingIntervalMillis"];
     }
     if (_json.containsKey("tokenPagination")) {
       tokenPagination = new TokenPagination.fromJson(_json["tokenPagination"]);
     }
     if (_json.containsKey("visitorId")) {
       visitorId = _json["visitorId"];
     }
   }
 
-  core.Map toJson() {
-    var _json = new core.Map();
+  core.Map<core.String, core.Object> toJson() {
+    final core.Map<core.String, core.Object> _json = new core.Map<core.String, core.Object>();
     if (etag != null) {
       _json["etag"] = etag;
     }
     if (eventId != null) {
       _json["eventId"] = eventId;
     }
     if (items != null) {
       _json["items"] = items.map((value) => (value).toJson()).toList();
     }
     if (kind != null) {
@@ skipping 25 matching lines @@
   core.String retractedMessageId;
 
   LiveChatMessageRetractedDetails();
 
   LiveChatMessageRetractedDetails.fromJson(core.Map _json) {
     if (_json.containsKey("retractedMessageId")) {
       retractedMessageId = _json["retractedMessageId"];
     }
   }
 
-  core.Map toJson() {
-    var _json = new core.Map();
+  core.Map<core.String, core.Object> toJson() {
+    final core.Map<core.String, core.Object> _json = new core.Map<core.String, core.Object>();
     if (retractedMessageId != null) {
       _json["retractedMessageId"] = retractedMessageId;
     }
     return _json;
   }
 }
 
 class LiveChatMessageSnippet {
   /**
    * The ID of the user that authored this message, this field is not always
@@ skipping 111 matching lines @@
       textMessageDetails = new LiveChatTextMessageDetails.fromJson(_json["textMessageDetails"]);
     }
     if (_json.containsKey("type")) {
       type = _json["type"];
     }
     if (_json.containsKey("userBannedDetails")) {
       userBannedDetails = new LiveChatUserBannedMessageDetails.fromJson(_json["userBannedDetails"]);
     }
   }
 
-  core.Map toJson() {
-    var _json = new core.Map();
+  core.Map<core.String, core.Object> toJson() {
+    final core.Map<core.String, core.Object> _json = new core.Map<core.String, core.Object>();
     if (authorChannelId != null) {
       _json["authorChannelId"] = authorChannelId;
     }
     if (displayMessage != null) {
       _json["displayMessage"] = displayMessage;
     }
     if (fanFundingEventDetails != null) {
       _json["fanFundingEventDetails"] = (fanFundingEventDetails).toJson();
     }
     if (hasDisplayContent != null) {
@@ skipping 67 matching lines @@
       id = _json["id"];
     }
     if (_json.containsKey("kind")) {
       kind = _json["kind"];
     }
     if (_json.containsKey("snippet")) {
       snippet = new LiveChatModeratorSnippet.fromJson(_json["snippet"]);
     }
   }
 
-  core.Map toJson() {
-    var _json = new core.Map();
+  core.Map<core.String, core.Object> toJson() {
+    final core.Map<core.String, core.Object> _json = new core.Map<core.String, core.Object>();
     if (etag != null) {
       _json["etag"] = etag;
     }
     if (id != null) {
       _json["id"] = id;
     }
     if (kind != null) {
       _json["kind"] = kind;
     }
     if (snippet != null) {
@@ skipping 55 matching lines @@
       prevPageToken = _json["prevPageToken"];
     }
     if (_json.containsKey("tokenPagination")) {
       tokenPagination = new TokenPagination.fromJson(_json["tokenPagination"]);
     }
     if (_json.containsKey("visitorId")) {
       visitorId = _json["visitorId"];
     }
   }
 
-  core.Map toJson() {
-    var _json = new core.Map();
+  core.Map<core.String, core.Object> toJson() {
+    final core.Map<core.String, core.Object> _json = new core.Map<core.String, core.Object>();
     if (etag != null) {
       _json["etag"] = etag;
     }
     if (eventId != null) {
       _json["eventId"] = eventId;
     }
     if (items != null) {
       _json["items"] = items.map((value) => (value).toJson()).toList();
     }
     if (kind != null) {
@@ skipping 28 matching lines @@
 
   LiveChatModeratorSnippet.fromJson(core.Map _json) {
     if (_json.containsKey("liveChatId")) {
       liveChatId = _json["liveChatId"];
     }
     if (_json.containsKey("moderatorDetails")) {
       moderatorDetails = new ChannelProfileDetails.fromJson(_json["moderatorDetails"]);
     }
   }
 
-  core.Map toJson() {
-    var _json = new core.Map();
+  core.Map<core.String, core.Object> toJson() {
+    final core.Map<core.String, core.Object> _json = new core.Map<core.String, core.Object>();
     if (liveChatId != null) {
       _json["liveChatId"] = liveChatId;
     }
     if (moderatorDetails != null) {
       _json["moderatorDetails"] = (moderatorDetails).toJson();
     }
     return _json;
   }
 }
 
 class LiveChatPollClosedDetails {
   /** The id of the poll that was closed. */
   core.String pollId;
 
   LiveChatPollClosedDetails();
 
   LiveChatPollClosedDetails.fromJson(core.Map _json) {
     if (_json.containsKey("pollId")) {
       pollId = _json["pollId"];
     }
   }
 
-  core.Map toJson() {
-    var _json = new core.Map();
+  core.Map<core.String, core.Object> toJson() {
+    final core.Map<core.String, core.Object> _json = new core.Map<core.String, core.Object>();
     if (pollId != null) {
       _json["pollId"] = pollId;
     }
     return _json;
   }
 }
 
 class LiveChatPollEditedDetails {
   core.String id;
   core.List<LiveChatPollItem> items;
   core.String prompt;
 
   LiveChatPollEditedDetails();
 
   LiveChatPollEditedDetails.fromJson(core.Map _json) {
     if (_json.containsKey("id")) {
       id = _json["id"];
     }
     if (_json.containsKey("items")) {
       items = _json["items"].map((value) => new LiveChatPollItem.fromJson(value)).toList();
     }
     if (_json.containsKey("prompt")) {
       prompt = _json["prompt"];
     }
   }
 
-  core.Map toJson() {
-    var _json = new core.Map();
+  core.Map<core.String, core.Object> toJson() {
+    final core.Map<core.String, core.Object> _json = new core.Map<core.String, core.Object>();
     if (id != null) {
       _json["id"] = id;
     }
     if (items != null) {
       _json["items"] = items.map((value) => (value).toJson()).toList();
     }
     if (prompt != null) {
       _json["prompt"] = prompt;
     }
     return _json;
   }
 }
 
 class LiveChatPollItem {
   /** Plain text description of the item. */
   core.String description;
   core.String itemId;
 
   LiveChatPollItem();
 
   LiveChatPollItem.fromJson(core.Map _json) {
     if (_json.containsKey("description")) {
       description = _json["description"];
     }
     if (_json.containsKey("itemId")) {
       itemId = _json["itemId"];
     }
   }
 
-  core.Map toJson() {
-    var _json = new core.Map();
+  core.Map<core.String, core.Object> toJson() {
+    final core.Map<core.String, core.Object> _json = new core.Map<core.String, core.Object>();
     if (description != null) {
       _json["description"] = description;
     }
     if (itemId != null) {
       _json["itemId"] = itemId;
     }
     return _json;
   }
 }
 
 class LiveChatPollOpenedDetails {
   core.String id;
   core.List<LiveChatPollItem> items;
   core.String prompt;
 
   LiveChatPollOpenedDetails();
 
   LiveChatPollOpenedDetails.fromJson(core.Map _json) {
     if (_json.containsKey("id")) {
       id = _json["id"];
     }
     if (_json.containsKey("items")) {
       items = _json["items"].map((value) => new LiveChatPollItem.fromJson(value)).toList();
     }
     if (_json.containsKey("prompt")) {
       prompt = _json["prompt"];
     }
   }
 
-  core.Map toJson() {
-    var _json = new core.Map();
+  core.Map<core.String, core.Object> toJson() {
+    final core.Map<core.String, core.Object> _json = new core.Map<core.String, core.Object>();
     if (id != null) {
       _json["id"] = id;
     }
     if (items != null) {
       _json["items"] = items.map((value) => (value).toJson()).toList();
     }
     if (prompt != null) {
       _json["prompt"] = prompt;
     }
     return _json;
@@ skipping 10 matching lines @@
 
   LiveChatPollVotedDetails.fromJson(core.Map _json) {
     if (_json.containsKey("itemId")) {
       itemId = _json["itemId"];
     }
     if (_json.containsKey("pollId")) {
       pollId = _json["pollId"];
     }
   }
 
-  core.Map toJson() {
-    var _json = new core.Map();
+  core.Map<core.String, core.Object> toJson() {
+    final core.Map<core.String, core.Object> _json = new core.Map<core.String, core.Object>();
     if (itemId != null) {
       _json["itemId"] = itemId;
     }
     if (pollId != null) {
       _json["pollId"] = pollId;
     }
     return _json;
   }
 }
 
@@ skipping 27 matching lines @@
       currency = _json["currency"];
     }
     if (_json.containsKey("tier")) {
       tier = _json["tier"];
     }
     if (_json.containsKey("userComment")) {
       userComment = _json["userComment"];
     }
   }
 
-  core.Map toJson() {
-    var _json = new core.Map();
+  core.Map<core.String, core.Object> toJson() {
+    final core.Map<core.String, core.Object> _json = new core.Map<core.String, core.Object>();
     if (amountDisplayString != null) {
       _json["amountDisplayString"] = amountDisplayString;
     }
     if (amountMicros != null) {
       _json["amountMicros"] = amountMicros;
     }
     if (currency != null) {
       _json["currency"] = currency;
     }
     if (tier != null) {
@@ skipping 11 matching lines @@
   core.String messageText;
 
   LiveChatTextMessageDetails();
 
   LiveChatTextMessageDetails.fromJson(core.Map _json) {
     if (_json.containsKey("messageText")) {
       messageText = _json["messageText"];
     }
   }
 
-  core.Map toJson() {
-    var _json = new core.Map();
+  core.Map<core.String, core.Object> toJson() {
+    final core.Map<core.String, core.Object> _json = new core.Map<core.String, core.Object>();
     if (messageText != null) {
       _json["messageText"] = messageText;
     }
     return _json;
   }
 }
 
 class LiveChatUserBannedMessageDetails {
   /**
    * The duration of the ban. This property is only present if the banType is
@@ skipping 17 matching lines @@
       banDurationSeconds = _json["banDurationSeconds"];
     }
     if (_json.containsKey("banType")) {
       banType = _json["banType"];
     }
     if (_json.containsKey("bannedUserDetails")) {
       bannedUserDetails = new ChannelProfileDetails.fromJson(_json["bannedUserDetails"]);
     }
   }
 
-  core.Map toJson() {
-    var _json = new core.Map();
+  core.Map<core.String, core.Object> toJson() {
+    final core.Map<core.String, core.Object> _json = new core.Map<core.String, core.Object>();
     if (banDurationSeconds != null) {
       _json["banDurationSeconds"] = banDurationSeconds;
     }
     if (banType != null) {
       _json["banType"] = banType;
     }
     if (bannedUserDetails != null) {
       _json["bannedUserDetails"] = (bannedUserDetails).toJson();
     }
     return _json;
@@ skipping 49 matching lines @@
       kind = _json["kind"];
     }
     if (_json.containsKey("snippet")) {
       snippet = new LiveStreamSnippet.fromJson(_json["snippet"]);
     }
     if (_json.containsKey("status")) {
       status = new LiveStreamStatus.fromJson(_json["status"]);
     }
   }
 
-  core.Map toJson() {
-    var _json = new core.Map();
+  core.Map<core.String, core.Object> toJson() {
+    final core.Map<core.String, core.Object> _json = new core.Map<core.String, core.Object>();
     if (cdn != null) {
       _json["cdn"] = (cdn).toJson();
     }
     if (contentDetails != null) {
       _json["contentDetails"] = (contentDetails).toJson();
     }
     if (etag != null) {
       _json["etag"] = etag;
     }
     if (id != null) {
@@ skipping 74 matching lines @@
       reason = _json["reason"];
     }
     if (_json.containsKey("severity")) {
       severity = _json["severity"];
     }
     if (_json.containsKey("type")) {
       type = _json["type"];
     }
   }
 
-  core.Map toJson() {
-    var _json = new core.Map();
+  core.Map<core.String, core.Object> toJson() {
+    final core.Map<core.String, core.Object> _json = new core.Map<core.String, core.Object>();
     if (description != null) {
       _json["description"] = description;
     }
     if (reason != null) {
       _json["reason"] = reason;
     }
     if (severity != null) {
       _json["severity"] = severity;
     }
     if (type != null) {
@@ skipping 30 matching lines @@
 
   LiveStreamContentDetails.fromJson(core.Map _json) {
     if (_json.containsKey("closedCaptionsIngestionUrl")) {
       closedCaptionsIngestionUrl = _json["closedCaptionsIngestionUrl"];
     }
     if (_json.containsKey("isReusable")) {
       isReusable = _json["isReusable"];
     }
   }
 
-  core.Map toJson() {
-    var _json = new core.Map();
+  core.Map<core.String, core.Object> toJson() {
+    final core.Map<core.String, core.Object> _json = new core.Map<core.String, core.Object>();
     if (closedCaptionsIngestionUrl != null) {
       _json["closedCaptionsIngestionUrl"] = closedCaptionsIngestionUrl;
     }
     if (isReusable != null) {
       _json["isReusable"] = isReusable;
     }
     return _json;
   }
 }
 
@@ skipping 20 matching lines @@
       configurationIssues = _json["configurationIssues"].map((value) => new LiveStreamConfigurationIssue.fromJson(value)).toList();
     }
     if (_json.containsKey("lastUpdateTimeSeconds")) {
       lastUpdateTimeSeconds = _json["lastUpdateTimeSeconds"];
     }
     if (_json.containsKey("status")) {
       status = _json["status"];
     }
   }
 
-  core.Map toJson() {
-    var _json = new core.Map();
+  core.Map<core.String, core.Object> toJson() {
+    final core.Map<core.String, core.Object> _json = new core.Map<core.String, core.Object>();
     if (configurationIssues != null) {
       _json["configurationIssues"] = configurationIssues.map((value) => (value).toJson()).toList();
     }
     if (lastUpdateTimeSeconds != null) {
       _json["lastUpdateTimeSeconds"] = lastUpdateTimeSeconds;
     }
     if (status != null) {
       _json["status"] = status;
     }
     return _json;
@@ skipping 52 matching lines @@
       prevPageToken = _json["prevPageToken"];
     }
     if (_json.containsKey("tokenPagination")) {
       tokenPagination = new TokenPagination.fromJson(_json["tokenPagination"]);
     }
     if (_json.containsKey("visitorId")) {
       visitorId = _json["visitorId"];
     }
   }
 
-  core.Map toJson() {
-    var _json = new core.Map();
+  core.Map<core.String, core.Object> toJson() {
+    final core.Map<core.String, core.Object> _json = new core.Map<core.String, core.Object>();
     if (etag != null) {
       _json["etag"] = etag;
     }
     if (eventId != null) {
       _json["eventId"] = eventId;
     }
     if (items != null) {
       _json["items"] = items.map((value) => (value).toJson()).toList();
     }
     if (kind != null) {
@@ skipping 52 matching lines @@
       isDefaultStream = _json["isDefaultStream"];
     }
     if (_json.containsKey("publishedAt")) {
       publishedAt = core.DateTime.parse(_json["publishedAt"]);
     }
     if (_json.containsKey("title")) {
       title = _json["title"];
     }
   }
 
-  core.Map toJson() {
-    var _json = new core.Map();
+  core.Map<core.String, core.Object> toJson() {
+    final core.Map<core.String, core.Object> _json = new core.Map<core.String, core.Object>();
     if (channelId != null) {
       _json["channelId"] = channelId;
     }
     if (description != null) {
       _json["description"] = description;
     }
     if (isDefaultStream != null) {
       _json["isDefaultStream"] = isDefaultStream;
     }
     if (publishedAt != null) {
@@ skipping 25 matching lines @@
 
   LiveStreamStatus.fromJson(core.Map _json) {
     if (_json.containsKey("healthStatus")) {
       healthStatus = new LiveStreamHealthStatus.fromJson(_json["healthStatus"]);
     }
     if (_json.containsKey("streamStatus")) {
       streamStatus = _json["streamStatus"];
     }
   }
 
-  core.Map toJson() {
-    var _json = new core.Map();
+  core.Map<core.String, core.Object> toJson() {
+    final core.Map<core.String, core.Object> _json = new core.Map<core.String, core.Object>();
     if (healthStatus != null) {
       _json["healthStatus"] = (healthStatus).toJson();
     }
     if (streamStatus != null) {
       _json["streamStatus"] = streamStatus;
     }
     return _json;
   }
 }
 
@@ skipping 10 matching lines @@
       default_ = _json["default"];
     }
     if (_json.containsKey("defaultLanguage")) {
       defaultLanguage = new LanguageTag.fromJson(_json["defaultLanguage"]);
     }
     if (_json.containsKey("localized")) {
       localized = _json["localized"].map((value) => new LocalizedString.fromJson(value)).toList();
     }
   }
 
-  core.Map toJson() {
-    var _json = new core.Map();
+  core.Map<core.String, core.Object> toJson() {
+    final core.Map<core.String, core.Object> _json = new core.Map<core.String, core.Object>();
     if (default_ != null) {
       _json["default"] = default_;
     }
     if (defaultLanguage != null) {
       _json["defaultLanguage"] = (defaultLanguage).toJson();
     }
     if (localized != null) {
       _json["localized"] = localized.map((value) => (value).toJson()).toList();
     }
     return _json;
   }
 }
 
 class LocalizedString {
   core.String language;
   core.String value;
 
   LocalizedString();
 
   LocalizedString.fromJson(core.Map _json) {
     if (_json.containsKey("language")) {
       language = _json["language"];
     }
     if (_json.containsKey("value")) {
       value = _json["value"];
     }
   }
 
-  core.Map toJson() {
-    var _json = new core.Map();
+  core.Map<core.String, core.Object> toJson() {
+    final core.Map<core.String, core.Object> _json = new core.Map<core.String, core.Object>();
     if (language != null) {
       _json["language"] = language;
     }
     if (value != null) {
       _json["value"] = value;
     }
     return _json;
   }
 }
 
@@ skipping 28 matching lines @@
       broadcastStreamDelayMs = _json["broadcastStreamDelayMs"];
     }
     if (_json.containsKey("embedHtml")) {
       embedHtml = _json["embedHtml"];
     }
     if (_json.containsKey("enableMonitorStream")) {
       enableMonitorStream = _json["enableMonitorStream"];
     }
   }
 
-  core.Map toJson() {
-    var _json = new core.Map();
+  core.Map<core.String, core.Object> toJson() {
+    final core.Map<core.String, core.Object> _json = new core.Map<core.String, core.Object>();
     if (broadcastStreamDelayMs != null) {
       _json["broadcastStreamDelayMs"] = broadcastStreamDelayMs;
     }
     if (embedHtml != null) {
       _json["embedHtml"] = embedHtml;
     }
     if (enableMonitorStream != null) {
       _json["enableMonitorStream"] = enableMonitorStream;
     }
     return _json;
@@ skipping 14 matching lines @@
 
   PageInfo.fromJson(core.Map _json) {
     if (_json.containsKey("resultsPerPage")) {
       resultsPerPage = _json["resultsPerPage"];
     }
     if (_json.containsKey("totalResults")) {
       totalResults = _json["totalResults"];
     }
   }
 
-  core.Map toJson() {
-    var _json = new core.Map();
+  core.Map<core.String, core.Object> toJson() {
+    final core.Map<core.String, core.Object> _json = new core.Map<core.String, core.Object>();
     if (resultsPerPage != null) {
       _json["resultsPerPage"] = resultsPerPage;
     }
     if (totalResults != null) {
       _json["totalResults"] = totalResults;
     }
     return _json;
   }
 }
 
@@ skipping 55 matching lines @@
     if (_json.containsKey("etag")) {
       etag = _json["etag"];
     }
     if (_json.containsKey("id")) {
       id = _json["id"];
     }
     if (_json.containsKey("kind")) {
       kind = _json["kind"];
     }
     if (_json.containsKey("localizations")) {
-      localizations = commons.mapMap(_json["localizations"], (item) => new PlaylistLocalization.fromJson(item));
+      localizations = commons.mapMap<core.Map<core.String, core.Object>, PlaylistLocalization>(_json["localizations"], (core.Map<core.String, core.Object> item) => new PlaylistLocalization.fromJson(item));
     }
     if (_json.containsKey("player")) {
       player = new PlaylistPlayer.fromJson(_json["player"]);
     }
     if (_json.containsKey("snippet")) {
       snippet = new PlaylistSnippet.fromJson(_json["snippet"]);
     }
     if (_json.containsKey("status")) {
       status = new PlaylistStatus.fromJson(_json["status"]);
     }
   }
 
-  core.Map toJson() {
-    var _json = new core.Map();
+  core.Map<core.String, core.Object> toJson() {
+    final core.Map<core.String, core.Object> _json = new core.Map<core.String, core.Object>();
     if (contentDetails != null) {
       _json["contentDetails"] = (contentDetails).toJson();
     }
     if (etag != null) {
       _json["etag"] = etag;
     }
     if (id != null) {
       _json["id"] = id;
     }
     if (kind != null) {
       _json["kind"] = kind;
     }
     if (localizations != null) {
-      _json["localizations"] = commons.mapMap(localizations, (item) => (item).toJson());
+      _json["localizations"] = commons.mapMap<PlaylistLocalization, core.Map<core.String, core.Object>>(localizations, (PlaylistLocalization item) => (item).toJson());
     }
     if (player != null) {
       _json["player"] = (player).toJson();
     }
     if (snippet != null) {
       _json["snippet"] = (snippet).toJson();
     }
     if (status != null) {
       _json["status"] = (status).toJson();
     }
     return _json;
   }
 }
 
 class PlaylistContentDetails {
   /** The number of videos in the playlist. */
   core.int itemCount;
 
   PlaylistContentDetails();
 
   PlaylistContentDetails.fromJson(core.Map _json) {
     if (_json.containsKey("itemCount")) {
       itemCount = _json["itemCount"];
     }
   }
 
-  core.Map toJson() {
-    var _json = new core.Map();
+  core.Map<core.String, core.Object> toJson() {
+    final core.Map<core.String, core.Object> _json = new core.Map<core.String, core.Object>();
     if (itemCount != null) {
       _json["itemCount"] = itemCount;
     }
     return _json;
   }
 }
 
 /**
  * A playlistItem resource identifies another resource, such as a video, that is
  * included in a playlist. In addition, the playlistItem  resource contains
@@ skipping 60 matching lines @@
       kind = _json["kind"];
     }
     if (_json.containsKey("snippet")) {
       snippet = new PlaylistItemSnippet.fromJson(_json["snippet"]);
     }
     if (_json.containsKey("status")) {
       status = new PlaylistItemStatus.fromJson(_json["status"]);
     }
   }
 
-  core.Map toJson() {
-    var _json = new core.Map();
+  core.Map<core.String, core.Object> toJson() {
+    final core.Map<core.String, core.Object> _json = new core.Map<core.String, core.Object>();
     if (contentDetails != null) {
       _json["contentDetails"] = (contentDetails).toJson();
     }
     if (etag != null) {
       _json["etag"] = etag;
     }
     if (id != null) {
       _json["id"] = id;
     }
     if (kind != null) {
@@ skipping 52 matching lines @@
       startAt = _json["startAt"];
     }
     if (_json.containsKey("videoId")) {
       videoId = _json["videoId"];
     }
     if (_json.containsKey("videoPublishedAt")) {
       videoPublishedAt = core.DateTime.parse(_json["videoPublishedAt"]);
     }
   }
 
-  core.Map toJson() {
-    var _json = new core.Map();
+  core.Map<core.String, core.Object> toJson() {
+    final core.Map<core.String, core.Object> _json = new core.Map<core.String, core.Object>();
     if (endAt != null) {
       _json["endAt"] = endAt;
     }
     if (note != null) {
       _json["note"] = note;
     }
     if (startAt != null) {
       _json["startAt"] = startAt;
     }
     if (videoId != null) {
@@ skipping 58 matching lines @@
       prevPageToken = _json["prevPageToken"];
     }
     if (_json.containsKey("tokenPagination")) {
       tokenPagination = new TokenPagination.fromJson(_json["tokenPagination"]);
     }
     if (_json.containsKey("visitorId")) {
       visitorId = _json["visitorId"];
     }
   }
 
-  core.Map toJson() {
-    var _json = new core.Map();
+  core.Map<core.String, core.Object> toJson() {
+    final core.Map<core.String, core.Object> _json = new core.Map<core.String, core.Object>();
     if (etag != null) {
       _json["etag"] = etag;
     }
     if (eventId != null) {
       _json["eventId"] = eventId;
     }
     if (items != null) {
       _json["items"] = items.map((value) => (value).toJson()).toList();
     }
     if (kind != null) {
@@ skipping 86 matching lines @@
       resourceId = new ResourceId.fromJson(_json["resourceId"]);
     }
     if (_json.containsKey("thumbnails")) {
       thumbnails = new ThumbnailDetails.fromJson(_json["thumbnails"]);
     }
     if (_json.containsKey("title")) {
       title = _json["title"];
     }
   }
 
-  core.Map toJson() {
-    var _json = new core.Map();
+  core.Map<core.String, core.Object> toJson() {
+    final core.Map<core.String, core.Object> _json = new core.Map<core.String, core.Object>();
     if (channelId != null) {
       _json["channelId"] = channelId;
     }
     if (channelTitle != null) {
       _json["channelTitle"] = channelTitle;
     }
     if (description != null) {
       _json["description"] = description;
     }
     if (playlistId != null) {
@@ skipping 30 matching lines @@
   core.String privacyStatus;
 
   PlaylistItemStatus();
 
   PlaylistItemStatus.fromJson(core.Map _json) {
     if (_json.containsKey("privacyStatus")) {
       privacyStatus = _json["privacyStatus"];
     }
   }
 
-  core.Map toJson() {
-    var _json = new core.Map();
+  core.Map<core.String, core.Object> toJson() {
+    final core.Map<core.String, core.Object> _json = new core.Map<core.String, core.Object>();
     if (privacyStatus != null) {
       _json["privacyStatus"] = privacyStatus;
     }
     return _json;
   }
 }
 
 class PlaylistListResponse {
   /** Etag of this resource. */
   core.String etag;
@@ skipping 46 matching lines @@
       prevPageToken = _json["prevPageToken"];
     }
     if (_json.containsKey("tokenPagination")) {
       tokenPagination = new TokenPagination.fromJson(_json["tokenPagination"]);
     }
     if (_json.containsKey("visitorId")) {
       visitorId = _json["visitorId"];
     }
   }
 
-  core.Map toJson() {
-    var _json = new core.Map();
+  core.Map<core.String, core.Object> toJson() {
+    final core.Map<core.String, core.Object> _json = new core.Map<core.String, core.Object>();
     if (etag != null) {
       _json["etag"] = etag;
     }
     if (eventId != null) {
       _json["eventId"] = eventId;
     }
     if (items != null) {
       _json["items"] = items.map((value) => (value).toJson()).toList();
     }
     if (kind != null) {
@@ skipping 29 matching lines @@
 
   PlaylistLocalization.fromJson(core.Map _json) {
     if (_json.containsKey("description")) {
       description = _json["description"];
     }
     if (_json.containsKey("title")) {
       title = _json["title"];
     }
   }
 
-  core.Map toJson() {
-    var _json = new core.Map();
+  core.Map<core.String, core.Object> toJson() {
+    final core.Map<core.String, core.Object> _json = new core.Map<core.String, core.Object>();
     if (description != null) {
       _json["description"] = description;
     }
     if (title != null) {
       _json["title"] = title;
     }
     return _json;
   }
 }
 
 class PlaylistPlayer {
   /** An <iframe> tag that embeds a player that will play the playlist. */
   core.String embedHtml;
 
   PlaylistPlayer();
 
   PlaylistPlayer.fromJson(core.Map _json) {
     if (_json.containsKey("embedHtml")) {
       embedHtml = _json["embedHtml"];
     }
   }
 
-  core.Map toJson() {
-    var _json = new core.Map();
+  core.Map<core.String, core.Object> toJson() {
+    final core.Map<core.String, core.Object> _json = new core.Map<core.String, core.Object>();
     if (embedHtml != null) {
       _json["embedHtml"] = embedHtml;
     }
     return _json;
   }
 }
 
 /**
  * Basic details about a playlist, including title, description and thumbnails.
  */
@@ skipping 52 matching lines @@
       tags = _json["tags"];
     }
     if (_json.containsKey("thumbnails")) {
       thumbnails = new ThumbnailDetails.fromJson(_json["thumbnails"]);
     }
     if (_json.containsKey("title")) {
       title = _json["title"];
     }
   }
 
-  core.Map toJson() {
-    var _json = new core.Map();
+  core.Map<core.String, core.Object> toJson() {
+    final core.Map<core.String, core.Object> _json = new core.Map<core.String, core.Object>();
     if (channelId != null) {
       _json["channelId"] = channelId;
     }
     if (channelTitle != null) {
       _json["channelTitle"] = channelTitle;
     }
     if (defaultLanguage != null) {
       _json["defaultLanguage"] = defaultLanguage;
     }
     if (description != null) {
@@ skipping 29 matching lines @@
   core.String privacyStatus;
 
   PlaylistStatus();
 
   PlaylistStatus.fromJson(core.Map _json) {
     if (_json.containsKey("privacyStatus")) {
       privacyStatus = _json["privacyStatus"];
     }
   }
 
-  core.Map toJson() {
-    var _json = new core.Map();
+  core.Map<core.String, core.Object> toJson() {
+    final core.Map<core.String, core.Object> _json = new core.Map<core.String, core.Object>();
     if (privacyStatus != null) {
       _json["privacyStatus"] = privacyStatus;
     }
     return _json;
   }
 }
 
 /** Describes a single promoted item. */
 class PromotedItem {
   /**
@@ skipping 25 matching lines @@
       id = new PromotedItemId.fromJson(_json["id"]);
     }
     if (_json.containsKey("promotedByContentOwner")) {
       promotedByContentOwner = _json["promotedByContentOwner"];
     }
     if (_json.containsKey("timing")) {
       timing = new InvideoTiming.fromJson(_json["timing"]);
     }
   }
 
-  core.Map toJson() {
-    var _json = new core.Map();
+  core.Map<core.String, core.Object> toJson() {
+    final core.Map<core.String, core.Object> _json = new core.Map<core.String, core.Object>();
     if (customMessage != null) {
       _json["customMessage"] = customMessage;
     }
     if (id != null) {
       _json["id"] = (id).toJson();
     }
     if (promotedByContentOwner != null) {
       _json["promotedByContentOwner"] = promotedByContentOwner;
     }
     if (timing != null) {
@@ skipping 44 matching lines @@
       type = _json["type"];
     }
     if (_json.containsKey("videoId")) {
       videoId = _json["videoId"];
     }
     if (_json.containsKey("websiteUrl")) {
       websiteUrl = _json["websiteUrl"];
     }
   }
 
-  core.Map toJson() {
-    var _json = new core.Map();
+  core.Map<core.String, core.Object> toJson() {
+    final core.Map<core.String, core.Object> _json = new core.Map<core.String, core.Object>();
     if (recentlyUploadedBy != null) {
       _json["recentlyUploadedBy"] = recentlyUploadedBy;
     }
     if (type != null) {
       _json["type"] = type;
     }
     if (videoId != null) {
       _json["videoId"] = videoId;
     }
     if (websiteUrl != null) {
@@ skipping 14 matching lines @@
 
   PropertyValue.fromJson(core.Map _json) {
     if (_json.containsKey("property")) {
       property = _json["property"];
     }
     if (_json.containsKey("value")) {
       value = _json["value"];
     }
   }
 
-  core.Map toJson() {
-    var _json = new core.Map();
+  core.Map<core.String, core.Object> toJson() {
+    final core.Map<core.String, core.Object> _json = new core.Map<core.String, core.Object>();
     if (property != null) {
       _json["property"] = property;
     }
     if (value != null) {
       _json["value"] = value;
     }
     return _json;
   }
 }
 
@@ skipping 32 matching lines @@
       kind = _json["kind"];
     }
     if (_json.containsKey("playlistId")) {
       playlistId = _json["playlistId"];
     }
     if (_json.containsKey("videoId")) {
       videoId = _json["videoId"];
     }
   }
 
-  core.Map toJson() {
-    var _json = new core.Map();
+  core.Map<core.String, core.Object> toJson() {
+    final core.Map<core.String, core.Object> _json = new core.Map<core.String, core.Object>();
     if (channelId != null) {
       _json["channelId"] = channelId;
     }
     if (kind != null) {
       _json["kind"] = kind;
     }
     if (playlistId != null) {
       _json["playlistId"] = playlistId;
     }
     if (videoId != null) {
@@ skipping 59 matching lines @@
       regionCode = _json["regionCode"];
     }
     if (_json.containsKey("tokenPagination")) {
       tokenPagination = new TokenPagination.fromJson(_json["tokenPagination"]);
     }
     if (_json.containsKey("visitorId")) {
       visitorId = _json["visitorId"];
     }
   }
 
-  core.Map toJson() {
-    var _json = new core.Map();
+  core.Map<core.String, core.Object> toJson() {
+    final core.Map<core.String, core.Object> _json = new core.Map<core.String, core.Object>();
     if (etag != null) {
       _json["etag"] = etag;
     }
     if (eventId != null) {
       _json["eventId"] = eventId;
     }
     if (items != null) {
       _json["items"] = items.map((value) => (value).toJson()).toList();
     }
     if (kind != null) {
@@ skipping 58 matching lines @@
       id = new ResourceId.fromJson(_json["id"]);
     }
     if (_json.containsKey("kind")) {
       kind = _json["kind"];
     }
     if (_json.containsKey("snippet")) {
       snippet = new SearchResultSnippet.fromJson(_json["snippet"]);
     }
   }
 
-  core.Map toJson() {
-    var _json = new core.Map();
+  core.Map<core.String, core.Object> toJson() {
+    final core.Map<core.String, core.Object> _json = new core.Map<core.String, core.Object>();
     if (etag != null) {
       _json["etag"] = etag;
     }
     if (id != null) {
       _json["id"] = (id).toJson();
     }
     if (kind != null) {
       _json["kind"] = kind;
     }
     if (snippet != null) {
@@ skipping 64 matching lines @@
       publishedAt = core.DateTime.parse(_json["publishedAt"]);
     }
     if (_json.containsKey("thumbnails")) {
       thumbnails = new ThumbnailDetails.fromJson(_json["thumbnails"]);
     }
     if (_json.containsKey("title")) {
       title = _json["title"];
     }
   }
 
-  core.Map toJson() {
-    var _json = new core.Map();
+  core.Map<core.String, core.Object> toJson() {
+    final core.Map<core.String, core.Object> _json = new core.Map<core.String, core.Object>();
     if (channelId != null) {
       _json["channelId"] = channelId;
     }
     if (channelTitle != null) {
       _json["channelTitle"] = channelTitle;
     }
     if (description != null) {
       _json["description"] = description;
     }
     if (liveBroadcastContent != null) {
@@ skipping 40 matching lines @@
       id = _json["id"];
     }
     if (_json.containsKey("kind")) {
       kind = _json["kind"];
     }
     if (_json.containsKey("snippet")) {
       snippet = new SponsorSnippet.fromJson(_json["snippet"]);
     }
   }
 
-  core.Map toJson() {
-    var _json = new core.Map();
+  core.Map<core.String, core.Object> toJson() {
+    final core.Map<core.String, core.Object> _json = new core.Map<core.String, core.Object>();
     if (etag != null) {
       _json["etag"] = etag;
     }
     if (id != null) {
       _json["id"] = id;
     }
     if (kind != null) {
       _json["kind"] = kind;
     }
     if (snippet != null) {
@@ skipping 47 matching lines @@
       pageInfo = new PageInfo.fromJson(_json["pageInfo"]);
     }
     if (_json.containsKey("tokenPagination")) {
       tokenPagination = new TokenPagination.fromJson(_json["tokenPagination"]);
     }
     if (_json.containsKey("visitorId")) {
       visitorId = _json["visitorId"];
     }
   }
 
-  core.Map toJson() {
-    var _json = new core.Map();
+  core.Map<core.String, core.Object> toJson() {
+    final core.Map<core.String, core.Object> _json = new core.Map<core.String, core.Object>();
     if (etag != null) {
       _json["etag"] = etag;
     }
     if (eventId != null) {
       _json["eventId"] = eventId;
     }
     if (items != null) {
       _json["items"] = items.map((value) => (value).toJson()).toList();
     }
     if (kind != null) {
@@ skipping 33 matching lines @@
       channelId = _json["channelId"];
     }
     if (_json.containsKey("sponsorDetails")) {
       sponsorDetails = new ChannelProfileDetails.fromJson(_json["sponsorDetails"]);
     }
     if (_json.containsKey("sponsorSince")) {
       sponsorSince = core.DateTime.parse(_json["sponsorSince"]);
     }
   }
 
-  core.Map toJson() {
-    var _json = new core.Map();
+  core.Map<core.String, core.Object> toJson() {
+    final core.Map<core.String, core.Object> _json = new core.Map<core.String, core.Object>();
     if (channelId != null) {
       _json["channelId"] = channelId;
     }
     if (sponsorDetails != null) {
       _json["sponsorDetails"] = (sponsorDetails).toJson();
     }
     if (sponsorSince != null) {
       _json["sponsorSince"] = (sponsorSince).toIso8601String();
     }
     return _json;
@@ skipping 46 matching lines @@
       kind = _json["kind"];
     }
     if (_json.containsKey("snippet")) {
       snippet = new SubscriptionSnippet.fromJson(_json["snippet"]);
     }
     if (_json.containsKey("subscriberSnippet")) {
       subscriberSnippet = new SubscriptionSubscriberSnippet.fromJson(_json["subscriberSnippet"]);
     }
   }
 
-  core.Map toJson() {
-    var _json = new core.Map();
+  core.Map<core.String, core.Object> toJson() {
+    final core.Map<core.String, core.Object> _json = new core.Map<core.String, core.Object>();
     if (contentDetails != null) {
       _json["contentDetails"] = (contentDetails).toJson();
     }
     if (etag != null) {
       _json["etag"] = etag;
     }
     if (id != null) {
       _json["id"] = id;
     }
     if (kind != null) {
@@ skipping 33 matching lines @@
       activityType = _json["activityType"];
     }
     if (_json.containsKey("newItemCount")) {
       newItemCount = _json["newItemCount"];
     }
     if (_json.containsKey("totalItemCount")) {
       totalItemCount = _json["totalItemCount"];
     }
   }
 
-  core.Map toJson() {
-    var _json = new core.Map();
+  core.Map<core.String, core.Object> toJson() {
+    final core.Map<core.String, core.Object> _json = new core.Map<core.String, core.Object>();
     if (activityType != null) {
       _json["activityType"] = activityType;
     }
     if (newItemCount != null) {
       _json["newItemCount"] = newItemCount;
     }
     if (totalItemCount != null) {
       _json["totalItemCount"] = totalItemCount;
     }
     return _json;
@@ skipping 52 matching lines @@
       prevPageToken = _json["prevPageToken"];
     }
     if (_json.containsKey("tokenPagination")) {
       tokenPagination = new TokenPagination.fromJson(_json["tokenPagination"]);
     }
     if (_json.containsKey("visitorId")) {
       visitorId = _json["visitorId"];
     }
   }
 
-  core.Map toJson() {
-    var _json = new core.Map();
+  core.Map<core.String, core.Object> toJson() {
+    final core.Map<core.String, core.Object> _json = new core.Map<core.String, core.Object>();
     if (etag != null) {
       _json["etag"] = etag;
     }
     if (eventId != null) {
       _json["eventId"] = eventId;
     }
     if (items != null) {
       _json["items"] = items.map((value) => (value).toJson()).toList();
     }
     if (kind != null) {
@@ skipping 69 matching lines @@
       resourceId = new ResourceId.fromJson(_json["resourceId"]);
     }
     if (_json.containsKey("thumbnails")) {
       thumbnails = new ThumbnailDetails.fromJson(_json["thumbnails"]);
     }
     if (_json.containsKey("title")) {
       title = _json["title"];
     }
   }
 
-  core.Map toJson() {
-    var _json = new core.Map();
+  core.Map<core.String, core.Object> toJson() {
+    final core.Map<core.String, core.Object> _json = new core.Map<core.String, core.Object>();
     if (channelId != null) {
       _json["channelId"] = channelId;
     }
     if (channelTitle != null) {
       _json["channelTitle"] = channelTitle;
     }
     if (description != null) {
       _json["description"] = description;
     }
     if (publishedAt != null) {
@@ skipping 36 matching lines @@
       description = _json["description"];
     }
     if (_json.containsKey("thumbnails")) {
       thumbnails = new ThumbnailDetails.fromJson(_json["thumbnails"]);
     }
     if (_json.containsKey("title")) {
       title = _json["title"];
     }
   }
 
-  core.Map toJson() {
-    var _json = new core.Map();
+  core.Map<core.String, core.Object> toJson() {
+    final core.Map<core.String, core.Object> _json = new core.Map<core.String, core.Object>();
     if (channelId != null) {
       _json["channelId"] = channelId;
     }
     if (description != null) {
       _json["description"] = description;
     }
     if (thumbnails != null) {
       _json["thumbnails"] = (thumbnails).toJson();
     }
     if (title != null) {
@@ skipping 30 matching lines @@
       id = _json["id"];
     }
     if (_json.containsKey("kind")) {
       kind = _json["kind"];
     }
     if (_json.containsKey("snippet")) {
       snippet = new SuperChatEventSnippet.fromJson(_json["snippet"]);
     }
   }
 
-  core.Map toJson() {
-    var _json = new core.Map();
+  core.Map<core.String, core.Object> toJson() {
+    final core.Map<core.String, core.Object> _json = new core.Map<core.String, core.Object>();
     if (etag != null) {
       _json["etag"] = etag;
     }
     if (id != null) {
       _json["id"] = id;
     }
     if (kind != null) {
       _json["kind"] = kind;
     }
     if (snippet != null) {
@@ skipping 47 matching lines @@
       pageInfo = new PageInfo.fromJson(_json["pageInfo"]);
     }
     if (_json.containsKey("tokenPagination")) {
       tokenPagination = new TokenPagination.fromJson(_json["tokenPagination"]);
     }
     if (_json.containsKey("visitorId")) {
       visitorId = _json["visitorId"];
     }
   }
 
-  core.Map toJson() {
-    var _json = new core.Map();
+  core.Map<core.String, core.Object> toJson() {
+    final core.Map<core.String, core.Object> _json = new core.Map<core.String, core.Object>();
     if (etag != null) {
       _json["etag"] = etag;
     }
     if (eventId != null) {
       _json["eventId"] = eventId;
     }
     if (items != null) {
       _json["items"] = items.map((value) => (value).toJson()).toList();
     }
     if (kind != null) {
@@ skipping 67 matching lines @@
       displayString = _json["displayString"];
     }
     if (_json.containsKey("messageType")) {
       messageType = _json["messageType"];
     }
     if (_json.containsKey("supporterDetails")) {
       supporterDetails = new ChannelProfileDetails.fromJson(_json["supporterDetails"]);
     }
   }
 
-  core.Map toJson() {
-    var _json = new core.Map();
+  core.Map<core.String, core.Object> toJson() {
+    final core.Map<core.String, core.Object> _json = new core.Map<core.String, core.Object>();
     if (amountMicros != null) {
       _json["amountMicros"] = amountMicros;
     }
     if (channelId != null) {
       _json["channelId"] = channelId;
     }
     if (commentText != null) {
       _json["commentText"] = commentText;
     }
     if (createdAt != null) {
@@ skipping 31 matching lines @@
       height = _json["height"];
     }
     if (_json.containsKey("url")) {
       url = _json["url"];
     }
     if (_json.containsKey("width")) {
       width = _json["width"];
     }
   }
 
-  core.Map toJson() {
-    var _json = new core.Map();
+  core.Map<core.String, core.Object> toJson() {
+    final core.Map<core.String, core.Object> _json = new core.Map<core.String, core.Object>();
     if (height != null) {
       _json["height"] = height;
     }
     if (url != null) {
       _json["url"] = url;
     }
     if (width != null) {
       _json["width"] = width;
     }
     return _json;
@@ skipping 26 matching lines @@
       maxres = new Thumbnail.fromJson(_json["maxres"]);
     }
     if (_json.containsKey("medium")) {
       medium = new Thumbnail.fromJson(_json["medium"]);
     }
     if (_json.containsKey("standard")) {
       standard = new Thumbnail.fromJson(_json["standard"]);
     }
   }
 
-  core.Map toJson() {
-    var _json = new core.Map();
+  core.Map<core.String, core.Object> toJson() {
+    final core.Map<core.String, core.Object> _json = new core.Map<core.String, core.Object>();
     if (default_ != null) {
       _json["default"] = (default_).toJson();
     }
     if (high != null) {
       _json["high"] = (high).toJson();
     }
     if (maxres != null) {
       _json["maxres"] = (maxres).toJson();
     }
     if (medium != null) {
@@ skipping 34 matching lines @@
       items = _json["items"].map((value) => new ThumbnailDetails.fromJson(value)).toList();
     }
     if (_json.containsKey("kind")) {
       kind = _json["kind"];
     }
     if (_json.containsKey("visitorId")) {
       visitorId = _json["visitorId"];
     }
   }
 
-  core.Map toJson() {
-    var _json = new core.Map();
+  core.Map<core.String, core.Object> toJson() {
+    final core.Map<core.String, core.Object> _json = new core.Map<core.String, core.Object>();
     if (etag != null) {
       _json["etag"] = etag;
     }
     if (eventId != null) {
       _json["eventId"] = eventId;
     }
     if (items != null) {
       _json["items"] = items.map((value) => (value).toJson()).toList();
     }
     if (kind != null) {
       _json["kind"] = kind;
     }
     if (visitorId != null) {
       _json["visitorId"] = visitorId;
     }
     return _json;
   }
 }
 
 /** Stub token pagination template to suppress results. */
 class TokenPagination {
 
   TokenPagination();
 
   TokenPagination.fromJson(core.Map _json) {
   }
 
-  core.Map toJson() {
-    var _json = new core.Map();
+  core.Map<core.String, core.Object> toJson() {
+    final core.Map<core.String, core.Object> _json = new core.Map<core.String, core.Object>();
     return _json;
   }
 }
 
 /** A video resource represents a YouTube video. */
 class Video {
   /**
    * Age restriction details related to a video. This data can only be retrieved
    * by the video owner.
    */
@@ skipping 102 matching lines @@
     if (_json.containsKey("id")) {
       id = _json["id"];
     }
     if (_json.containsKey("kind")) {
       kind = _json["kind"];
     }
     if (_json.containsKey("liveStreamingDetails")) {
       liveStreamingDetails = new VideoLiveStreamingDetails.fromJson(_json["liveStreamingDetails"]);
     }
     if (_json.containsKey("localizations")) {
-      localizations = commons.mapMap(_json["localizations"], (item) => new VideoLocalization.fromJson(item));
+      localizations = commons.mapMap<core.Map<core.String, core.Object>, VideoLocalization>(_json["localizations"], (core.Map<core.String, core.Object> item) => new VideoLocalization.fromJson(item));
     }
     if (_json.containsKey("monetizationDetails")) {
       monetizationDetails = new VideoMonetizationDetails.fromJson(_json["monetizationDetails"]);
     }
     if (_json.containsKey("player")) {
       player = new VideoPlayer.fromJson(_json["player"]);
     }
     if (_json.containsKey("processingDetails")) {
       processingDetails = new VideoProcessingDetails.fromJson(_json["processingDetails"]);
     }
@@ skipping 13 matching lines @@
       status = new VideoStatus.fromJson(_json["status"]);
     }
     if (_json.containsKey("suggestions")) {
       suggestions = new VideoSuggestions.fromJson(_json["suggestions"]);
     }
     if (_json.containsKey("topicDetails")) {
       topicDetails = new VideoTopicDetails.fromJson(_json["topicDetails"]);
     }
   }
 
-  core.Map toJson() {
-    var _json = new core.Map();
+  core.Map<core.String, core.Object> toJson() {
+    final core.Map<core.String, core.Object> _json = new core.Map<core.String, core.Object>();
     if (ageGating != null) {
       _json["ageGating"] = (ageGating).toJson();
     }
     if (contentDetails != null) {
       _json["contentDetails"] = (contentDetails).toJson();
     }
     if (etag != null) {
       _json["etag"] = etag;
     }
     if (fileDetails != null) {
       _json["fileDetails"] = (fileDetails).toJson();
     }
     if (id != null) {
       _json["id"] = id;
     }
     if (kind != null) {
       _json["kind"] = kind;
     }
     if (liveStreamingDetails != null) {
       _json["liveStreamingDetails"] = (liveStreamingDetails).toJson();
     }
     if (localizations != null) {
-      _json["localizations"] = commons.mapMap(localizations, (item) => (item).toJson());
+      _json["localizations"] = commons.mapMap<VideoLocalization, core.Map<core.String, core.Object>>(localizations, (VideoLocalization item) => (item).toJson());
     }
     if (monetizationDetails != null) {
       _json["monetizationDetails"] = (monetizationDetails).toJson();
     }
     if (player != null) {
       _json["player"] = (player).toJson();
     }
     if (processingDetails != null) {
       _json["processingDetails"] = (processingDetails).toJson();
     }
@@ skipping 54 matching lines @@
       reasonId = _json["reasonId"];
     }
     if (_json.containsKey("secondaryReasonId")) {
       secondaryReasonId = _json["secondaryReasonId"];
     }
     if (_json.containsKey("videoId")) {
       videoId = _json["videoId"];
     }
   }
 
-  core.Map toJson() {
-    var _json = new core.Map();
+  core.Map<core.String, core.Object> toJson() {
+    final core.Map<core.String, core.Object> _json = new core.Map<core.String, core.Object>();
     if (comments != null) {
       _json["comments"] = comments;
     }
     if (language != null) {
       _json["language"] = language;
     }
     if (reasonId != null) {
       _json["reasonId"] = reasonId;
     }
     if (secondaryReasonId != null) {
@@ skipping 36 matching lines @@
       id = _json["id"];
     }
     if (_json.containsKey("kind")) {
       kind = _json["kind"];
     }
     if (_json.containsKey("snippet")) {
       snippet = new VideoAbuseReportReasonSnippet.fromJson(_json["snippet"]);
     }
   }
 
-  core.Map toJson() {
-    var _json = new core.Map();
+  core.Map<core.String, core.Object> toJson() {
+    final core.Map<core.String, core.Object> _json = new core.Map<core.String, core.Object>();
     if (etag != null) {
       _json["etag"] = etag;
     }
     if (id != null) {
       _json["id"] = id;
     }
     if (kind != null) {
       _json["kind"] = kind;
     }
     if (snippet != null) {
@@ skipping 31 matching lines @@
       items = _json["items"].map((value) => new VideoAbuseReportReason.fromJson(value)).toList();
     }
     if (_json.containsKey("kind")) {
       kind = _json["kind"];
     }
     if (_json.containsKey("visitorId")) {
       visitorId = _json["visitorId"];
     }
   }
 
-  core.Map toJson() {
-    var _json = new core.Map();
+  core.Map<core.String, core.Object> toJson() {
+    final core.Map<core.String, core.Object> _json = new core.Map<core.String, core.Object>();
     if (etag != null) {
       _json["etag"] = etag;
     }
     if (eventId != null) {
       _json["eventId"] = eventId;
     }
     if (items != null) {
       _json["items"] = items.map((value) => (value).toJson()).toList();
     }
     if (kind != null) {
@@ skipping 20 matching lines @@
 
   VideoAbuseReportReasonSnippet.fromJson(core.Map _json) {
     if (_json.containsKey("label")) {
       label = _json["label"];
     }
     if (_json.containsKey("secondaryReasons")) {
       secondaryReasons = _json["secondaryReasons"].map((value) => new VideoAbuseReportSecondaryReason.fromJson(value)).toList();
     }
   }
 
-  core.Map toJson() {
-    var _json = new core.Map();
+  core.Map<core.String, core.Object> toJson() {
+    final core.Map<core.String, core.Object> _json = new core.Map<core.String, core.Object>();
     if (label != null) {
       _json["label"] = label;
     }
     if (secondaryReasons != null) {
       _json["secondaryReasons"] = secondaryReasons.map((value) => (value).toJson()).toList();
     }
     return _json;
   }
 }
 
 class VideoAbuseReportSecondaryReason {
   /** The ID of this abuse report secondary reason. */
   core.String id;
   /** The localized label for this abuse report secondary reason. */
   core.String label;
 
   VideoAbuseReportSecondaryReason();
 
   VideoAbuseReportSecondaryReason.fromJson(core.Map _json) {
     if (_json.containsKey("id")) {
       id = _json["id"];
     }
     if (_json.containsKey("label")) {
       label = _json["label"];
     }
   }
 
-  core.Map toJson() {
-    var _json = new core.Map();
+  core.Map<core.String, core.Object> toJson() {
+    final core.Map<core.String, core.Object> _json = new core.Map<core.String, core.Object>();
     if (id != null) {
       _json["id"] = id;
     }
     if (label != null) {
       _json["label"] = label;
     }
     return _json;
   }
 }
 
@@ skipping 27 matching lines @@
       alcoholContent = _json["alcoholContent"];
     }
     if (_json.containsKey("restricted")) {
       restricted = _json["restricted"];
     }
     if (_json.containsKey("videoGameRating")) {
       videoGameRating = _json["videoGameRating"];
     }
   }
 
-  core.Map toJson() {
-    var _json = new core.Map();
+  core.Map<core.String, core.Object> toJson() {
+    final core.Map<core.String, core.Object> _json = new core.Map<core.String, core.Object>();
     if (alcoholContent != null) {
       _json["alcoholContent"] = alcoholContent;
     }
     if (restricted != null) {
       _json["restricted"] = restricted;
     }
     if (videoGameRating != null) {
       _json["videoGameRating"] = videoGameRating;
     }
     return _json;
@@ skipping 30 matching lines @@
       id = _json["id"];
     }
     if (_json.containsKey("kind")) {
       kind = _json["kind"];
     }
     if (_json.containsKey("snippet")) {
       snippet = new VideoCategorySnippet.fromJson(_json["snippet"]);
     }
   }
 
-  core.Map toJson() {
-    var _json = new core.Map();
+  core.Map<core.String, core.Object> toJson() {
+    final core.Map<core.String, core.Object> _json = new core.Map<core.String, core.Object>();
     if (etag != null) {
       _json["etag"] = etag;
     }
     if (id != null) {
       _json["id"] = id;
     }
     if (kind != null) {
       _json["kind"] = kind;
     }
     if (snippet != null) {
@@ skipping 59 matching lines @@
       prevPageToken = _json["prevPageToken"];
     }
     if (_json.containsKey("tokenPagination")) {
       tokenPagination = new TokenPagination.fromJson(_json["tokenPagination"]);
     }
     if (_json.containsKey("visitorId")) {
       visitorId = _json["visitorId"];
     }
   }
 
-  core.Map toJson() {
-    var _json = new core.Map();
+  core.Map<core.String, core.Object> toJson() {
+    final core.Map<core.String, core.Object> _json = new core.Map<core.String, core.Object>();
     if (etag != null) {
       _json["etag"] = etag;
     }
     if (eventId != null) {
       _json["eventId"] = eventId;
     }
     if (items != null) {
       _json["items"] = items.map((value) => (value).toJson()).toList();
     }
     if (kind != null) {
@@ skipping 33 matching lines @@
       assignable = _json["assignable"];
     }
     if (_json.containsKey("channelId")) {
       channelId = _json["channelId"];
     }
     if (_json.containsKey("title")) {
       title = _json["title"];
     }
   }
 
-  core.Map toJson() {
-    var _json = new core.Map();
+  core.Map<core.String, core.Object> toJson() {
+    final core.Map<core.String, core.Object> _json = new core.Map<core.String, core.Object>();
     if (assignable != null) {
       _json["assignable"] = assignable;
     }
     if (channelId != null) {
       _json["channelId"] = channelId;
     }
     if (title != null) {
       _json["title"] = title;
     }
     return _json;
@@ skipping 94 matching lines @@
       licensedContent = _json["licensedContent"];
     }
     if (_json.containsKey("projection")) {
       projection = _json["projection"];
     }
     if (_json.containsKey("regionRestriction")) {
       regionRestriction = new VideoContentDetailsRegionRestriction.fromJson(_json["regionRestriction"]);
     }
   }
 
-  core.Map toJson() {
-    var _json = new core.Map();
+  core.Map<core.String, core.Object> toJson() {
+    final core.Map<core.String, core.Object> _json = new core.Map<core.String, core.Object>();
     if (caption != null) {
       _json["caption"] = caption;
     }
     if (contentRating != null) {
       _json["contentRating"] = (contentRating).toJson();
     }
     if (countryRestriction != null) {
       _json["countryRestriction"] = (countryRestriction).toJson();
     }
     if (definition != null) {
@@ skipping 42 matching lines @@
 
   VideoContentDetailsRegionRestriction.fromJson(core.Map _json) {
     if (_json.containsKey("allowed")) {
       allowed = _json["allowed"];
     }
     if (_json.containsKey("blocked")) {
       blocked = _json["blocked"];
     }
   }
 
-  core.Map toJson() {
-    var _json = new core.Map();
+  core.Map<core.String, core.Object> toJson() {
+    final core.Map<core.String, core.Object> _json = new core.Map<core.String, core.Object>();
     if (allowed != null) {
       _json["allowed"] = allowed;
     }
     if (blocked != null) {
       _json["blocked"] = blocked;
     }
     return _json;
   }
 }
 
@@ skipping 81 matching lines @@
       fileSize = _json["fileSize"];
     }
     if (_json.containsKey("fileType")) {
       fileType = _json["fileType"];
     }
     if (_json.containsKey("videoStreams")) {
       videoStreams = _json["videoStreams"].map((value) => new VideoFileDetailsVideoStream.fromJson(value)).toList();
     }
   }
 
-  core.Map toJson() {
-    var _json = new core.Map();
+  core.Map<core.String, core.Object> toJson() {
+    final core.Map<core.String, core.Object> _json = new core.Map<core.String, core.Object>();
     if (audioStreams != null) {
       _json["audioStreams"] = audioStreams.map((value) => (value).toJson()).toList();
     }
     if (bitrateBps != null) {
       _json["bitrateBps"] = bitrateBps;
     }
     if (container != null) {
       _json["container"] = container;
     }
     if (creationTime != null) {
@@ skipping 42 matching lines @@
       channelCount = _json["channelCount"];
     }
     if (_json.containsKey("codec")) {
       codec = _json["codec"];
     }
     if (_json.containsKey("vendor")) {
       vendor = _json["vendor"];
     }
   }
 
-  core.Map toJson() {
-    var _json = new core.Map();
+  core.Map<core.String, core.Object> toJson() {
+    final core.Map<core.String, core.Object> _json = new core.Map<core.String, core.Object>();
     if (bitrateBps != null) {
       _json["bitrateBps"] = bitrateBps;
     }
     if (channelCount != null) {
       _json["channelCount"] = channelCount;
     }
     if (codec != null) {
       _json["codec"] = codec;
     }
     if (vendor != null) {
@@ skipping 62 matching lines @@
       rotation = _json["rotation"];
     }
     if (_json.containsKey("vendor")) {
       vendor = _json["vendor"];
     }
     if (_json.containsKey("widthPixels")) {
       widthPixels = _json["widthPixels"];
     }
   }
 
-  core.Map toJson() {
-    var _json = new core.Map();
+  core.Map<core.String, core.Object> toJson() {
+    final core.Map<core.String, core.Object> _json = new core.Map<core.String, core.Object>();
     if (aspectRatio != null) {
       _json["aspectRatio"] = aspectRatio;
     }
     if (bitrateBps != null) {
       _json["bitrateBps"] = bitrateBps;
     }
     if (codec != null) {
       _json["codec"] = codec;
     }
     if (frameRateFps != null) {
@@ skipping 43 matching lines @@
       items = _json["items"].map((value) => new VideoRating.fromJson(value)).toList();
     }
     if (_json.containsKey("kind")) {
       kind = _json["kind"];
     }
     if (_json.containsKey("visitorId")) {
       visitorId = _json["visitorId"];
     }
   }
 
-  core.Map toJson() {
-    var _json = new core.Map();
+  core.Map<core.String, core.Object> toJson() {
+    final core.Map<core.String, core.Object> _json = new core.Map<core.String, core.Object>();
     if (etag != null) {
       _json["etag"] = etag;
     }
     if (eventId != null) {
       _json["eventId"] = eventId;
     }
     if (items != null) {
       _json["items"] = items.map((value) => (value).toJson()).toList();
     }
     if (kind != null) {
@@ skipping 58 matching lines @@
       prevPageToken = _json["prevPageToken"];
     }
     if (_json.containsKey("tokenPagination")) {
       tokenPagination = new TokenPagination.fromJson(_json["tokenPagination"]);
     }
     if (_json.containsKey("visitorId")) {
       visitorId = _json["visitorId"];
     }
   }
 
-  core.Map toJson() {
-    var _json = new core.Map();
+  core.Map<core.String, core.Object> toJson() {
+    final core.Map<core.String, core.Object> _json = new core.Map<core.String, core.Object>();
     if (etag != null) {
       _json["etag"] = etag;
     }
     if (eventId != null) {
       _json["eventId"] = eventId;
     }
     if (items != null) {
       _json["items"] = items.map((value) => (value).toJson()).toList();
     }
     if (kind != null) {
@@ skipping 79 matching lines @@
       concurrentViewers = _json["concurrentViewers"];
     }
     if (_json.containsKey("scheduledEndTime")) {
       scheduledEndTime = core.DateTime.parse(_json["scheduledEndTime"]);
     }
     if (_json.containsKey("scheduledStartTime")) {
       scheduledStartTime = core.DateTime.parse(_json["scheduledStartTime"]);
     }
   }
 
-  core.Map toJson() {
-    var _json = new core.Map();
+  core.Map<core.String, core.Object> toJson() {
+    final core.Map<core.String, core.Object> _json = new core.Map<core.String, core.Object>();
     if (activeLiveChatId != null) {
       _json["activeLiveChatId"] = activeLiveChatId;
     }
     if (actualEndTime != null) {
       _json["actualEndTime"] = (actualEndTime).toIso8601String();
     }
     if (actualStartTime != null) {
       _json["actualStartTime"] = (actualStartTime).toIso8601String();
     }
     if (concurrentViewers != null) {
@@ skipping 20 matching lines @@
 
   VideoLocalization.fromJson(core.Map _json) {
     if (_json.containsKey("description")) {
       description = _json["description"];
     }
     if (_json.containsKey("title")) {
       title = _json["title"];
     }
   }
 
-  core.Map toJson() {
-    var _json = new core.Map();
+  core.Map<core.String, core.Object> toJson() {
+    final core.Map<core.String, core.Object> _json = new core.Map<core.String, core.Object>();
     if (description != null) {
       _json["description"] = description;
     }
     if (title != null) {
       _json["title"] = title;
     }
     return _json;
   }
 }
 
 /** Details about monetization of a YouTube Video. */
 class VideoMonetizationDetails {
   /**
    * The value of access indicates whether the video can be monetized or not.
    */
   AccessPolicy access;
 
   VideoMonetizationDetails();
 
   VideoMonetizationDetails.fromJson(core.Map _json) {
     if (_json.containsKey("access")) {
       access = new AccessPolicy.fromJson(_json["access"]);
     }
   }
 
-  core.Map toJson() {
-    var _json = new core.Map();
+  core.Map<core.String, core.Object> toJson() {
+    final core.Map<core.String, core.Object> _json = new core.Map<core.String, core.Object>();
     if (access != null) {
       _json["access"] = (access).toJson();
     }
     return _json;
   }
 }
 
 /** Player to be used for a video playback. */
 class VideoPlayer {
   core.String embedHeight;
   /** An <iframe> tag that embeds a player that will play the video. */
   core.String embedHtml;
   /** The embed width */
   core.String embedWidth;
 
   VideoPlayer();
 
   VideoPlayer.fromJson(core.Map _json) {
     if (_json.containsKey("embedHeight")) {
       embedHeight = _json["embedHeight"];
     }
     if (_json.containsKey("embedHtml")) {
       embedHtml = _json["embedHtml"];
     }
     if (_json.containsKey("embedWidth")) {
       embedWidth = _json["embedWidth"];
     }
   }
 
-  core.Map toJson() {
-    var _json = new core.Map();
+  core.Map<core.String, core.Object> toJson() {
+    final core.Map<core.String, core.Object> _json = new core.Map<core.String, core.Object>();
     if (embedHeight != null) {
       _json["embedHeight"] = embedHeight;
     }
     if (embedHtml != null) {
       _json["embedHtml"] = embedHtml;
     }
     if (embedWidth != null) {
       _json["embedWidth"] = embedWidth;
     }
     return _json;
@@ skipping 87 matching lines @@
       processingStatus = _json["processingStatus"];
     }
     if (_json.containsKey("tagSuggestionsAvailability")) {
       tagSuggestionsAvailability = _json["tagSuggestionsAvailability"];
     }
     if (_json.containsKey("thumbnailsAvailability")) {
       thumbnailsAvailability = _json["thumbnailsAvailability"];
     }
   }
 
-  core.Map toJson() {
-    var _json = new core.Map();
+  core.Map<core.String, core.Object> toJson() {
+    final core.Map<core.String, core.Object> _json = new core.Map<core.String, core.Object>();
     if (editorSuggestionsAvailability != null) {
       _json["editorSuggestionsAvailability"] = editorSuggestionsAvailability;
     }
     if (fileDetailsAvailability != null) {
       _json["fileDetailsAvailability"] = fileDetailsAvailability;
     }
     if (processingFailureReason != null) {
       _json["processingFailureReason"] = processingFailureReason;
     }
     if (processingIssuesAvailability != null) {
@@ skipping 48 matching lines @@
       partsProcessed = _json["partsProcessed"];
     }
     if (_json.containsKey("partsTotal")) {
       partsTotal = _json["partsTotal"];
     }
     if (_json.containsKey("timeLeftMs")) {
       timeLeftMs = _json["timeLeftMs"];
     }
   }
 
-  core.Map toJson() {
-    var _json = new core.Map();
+  core.Map<core.String, core.Object> toJson() {
+    final core.Map<core.String, core.Object> _json = new core.Map<core.String, core.Object>();
     if (partsProcessed != null) {
       _json["partsProcessed"] = partsProcessed;
     }
     if (partsTotal != null) {
       _json["partsTotal"] = partsTotal;
     }
     if (timeLeftMs != null) {
       _json["timeLeftMs"] = timeLeftMs;
     }
     return _json;
   }
 }
 
 /** Project specific details about the content of a YouTube Video. */
 class VideoProjectDetails {
   /** A list of project tags associated with the video during the upload. */
   core.List<core.String> tags;
 
   VideoProjectDetails();
 
   VideoProjectDetails.fromJson(core.Map _json) {
     if (_json.containsKey("tags")) {
       tags = _json["tags"];
     }
   }
 
-  core.Map toJson() {
-    var _json = new core.Map();
+  core.Map<core.String, core.Object> toJson() {
+    final core.Map<core.String, core.Object> _json = new core.Map<core.String, core.Object>();
     if (tags != null) {
       _json["tags"] = tags;
     }
     return _json;
   }
 }
 
 class VideoRating {
   /**
    *
@@ skipping 10 matching lines @@
 
   VideoRating.fromJson(core.Map _json) {
     if (_json.containsKey("rating")) {
       rating = _json["rating"];
     }
     if (_json.containsKey("videoId")) {
       videoId = _json["videoId"];
     }
   }
 
-  core.Map toJson() {
-    var _json = new core.Map();
+  core.Map<core.String, core.Object> toJson() {
+    final core.Map<core.String, core.Object> _json = new core.Map<core.String, core.Object>();
     if (rating != null) {
       _json["rating"] = rating;
     }
     if (videoId != null) {
       _json["videoId"] = videoId;
     }
     return _json;
   }
 }
 
@@ skipping 16 matching lines @@
       location = new GeoPoint.fromJson(_json["location"]);
     }
     if (_json.containsKey("locationDescription")) {
       locationDescription = _json["locationDescription"];
     }
     if (_json.containsKey("recordingDate")) {
       recordingDate = core.DateTime.parse(_json["recordingDate"]);
     }
   }
 
-  core.Map toJson() {
-    var _json = new core.Map();
+  core.Map<core.String, core.Object> toJson() {
+    final core.Map<core.String, core.Object> _json = new core.Map<core.String, core.Object>();
     if (location != null) {
       _json["location"] = (location).toJson();
     }
     if (locationDescription != null) {
       _json["locationDescription"] = locationDescription;
     }
     if (recordingDate != null) {
       _json["recordingDate"] = (recordingDate).toIso8601String();
     }
     return _json;
@@ skipping 89 matching lines @@
       tags = _json["tags"];
     }
     if (_json.containsKey("thumbnails")) {
       thumbnails = new ThumbnailDetails.fromJson(_json["thumbnails"]);
     }
     if (_json.containsKey("title")) {
       title = _json["title"];
     }
   }
 
-  core.Map toJson() {
-    var _json = new core.Map();
+  core.Map<core.String, core.Object> toJson() {
+    final core.Map<core.String, core.Object> _json = new core.Map<core.String, core.Object>();
     if (categoryId != null) {
       _json["categoryId"] = categoryId;
     }
     if (channelId != null) {
       _json["channelId"] = channelId;
     }
     if (channelTitle != null) {
       _json["channelTitle"] = channelTitle;
     }
     if (defaultAudioLanguage != null) {
@@ skipping 65 matching lines @@
       favoriteCount = _json["favoriteCount"];
     }
     if (_json.containsKey("likeCount")) {
       likeCount = _json["likeCount"];
     }
     if (_json.containsKey("viewCount")) {
       viewCount = _json["viewCount"];
     }
   }
 
-  core.Map toJson() {
-    var _json = new core.Map();
+  core.Map<core.String, core.Object> toJson() {
+    final core.Map<core.String, core.Object> _json = new core.Map<core.String, core.Object>();
     if (commentCount != null) {
       _json["commentCount"] = commentCount;
     }
     if (dislikeCount != null) {
       _json["dislikeCount"] = dislikeCount;
     }
     if (favoriteCount != null) {
       _json["favoriteCount"] = favoriteCount;
     }
     if (likeCount != null) {
@@ skipping 99 matching lines @@
       publishAt = core.DateTime.parse(_json["publishAt"]);
     }
     if (_json.containsKey("rejectionReason")) {
       rejectionReason = _json["rejectionReason"];
     }
     if (_json.containsKey("uploadStatus")) {
       uploadStatus = _json["uploadStatus"];
     }
   }
 
-  core.Map toJson() {
-    var _json = new core.Map();
+  core.Map<core.String, core.Object> toJson() {
+    final core.Map<core.String, core.Object> _json = new core.Map<core.String, core.Object>();
     if (embeddable != null) {
       _json["embeddable"] = embeddable;
     }
     if (failureReason != null) {
       _json["failureReason"] = failureReason;
     }
     if (license != null) {
       _json["license"] = license;
     }
     if (privacyStatus != null) {
@@ skipping 66 matching lines @@
       processingHints = _json["processingHints"];
     }
     if (_json.containsKey("processingWarnings")) {
       processingWarnings = _json["processingWarnings"];
     }
     if (_json.containsKey("tagSuggestions")) {
       tagSuggestions = _json["tagSuggestions"].map((value) => new VideoSuggestionsTagSuggestion.fromJson(value)).toList();
     }
   }
 
-  core.Map toJson() {
-    var _json = new core.Map();
+  core.Map<core.String, core.Object> toJson() {
+    final core.Map<core.String, core.Object> _json = new core.Map<core.String, core.Object>();
     if (editorSuggestions != null) {
       _json["editorSuggestions"] = editorSuggestions;
     }
     if (processingErrors != null) {
       _json["processingErrors"] = processingErrors;
     }
     if (processingHints != null) {
       _json["processingHints"] = processingHints;
     }
     if (processingWarnings != null) {
@@ skipping 23 matching lines @@
 
   VideoSuggestionsTagSuggestion.fromJson(core.Map _json) {
     if (_json.containsKey("categoryRestricts")) {
       categoryRestricts = _json["categoryRestricts"];
     }
     if (_json.containsKey("tag")) {
       tag = _json["tag"];
     }
   }
 
-  core.Map toJson() {
-    var _json = new core.Map();
+  core.Map<core.String, core.Object> toJson() {
+    final core.Map<core.String, core.Object> _json = new core.Map<core.String, core.Object>();
     if (categoryRestricts != null) {
       _json["categoryRestricts"] = categoryRestricts;
     }
     if (tag != null) {
       _json["tag"] = tag;
     }
     return _json;
   }
 }
 
@@ skipping 25 matching lines @@
       relevantTopicIds = _json["relevantTopicIds"];
     }
     if (_json.containsKey("topicCategories")) {
       topicCategories = _json["topicCategories"];
     }
     if (_json.containsKey("topicIds")) {
       topicIds = _json["topicIds"];
     }
   }
 
-  core.Map toJson() {
-    var _json = new core.Map();
+  core.Map<core.String, core.Object> toJson() {
+    final core.Map<core.String, core.Object> _json = new core.Map<core.String, core.Object>();
     if (relevantTopicIds != null) {
       _json["relevantTopicIds"] = relevantTopicIds;
     }
     if (topicCategories != null) {
       _json["topicCategories"] = topicCategories;
     }
     if (topicIds != null) {
       _json["topicIds"] = topicIds;
     }
     return _json;
@@ skipping 19 matching lines @@
       backgroundColor = _json["backgroundColor"];
     }
     if (_json.containsKey("featuredPlaylistId")) {
       featuredPlaylistId = _json["featuredPlaylistId"];
     }
     if (_json.containsKey("textColor")) {
       textColor = _json["textColor"];
     }
   }
 
-  core.Map toJson() {
-    var _json = new core.Map();
+  core.Map<core.String, core.Object> toJson() {
+    final core.Map<core.String, core.Object> _json = new core.Map<core.String, core.Object>();
     if (backgroundColor != null) {
       _json["backgroundColor"] = backgroundColor;
     }
     if (featuredPlaylistId != null) {
       _json["featuredPlaylistId"] = featuredPlaylistId;
     }
     if (textColor != null) {
       _json["textColor"] = textColor;
     }
     return _json;
   }
 }