Generate 0.1.0 version of googleapis/googleapis_beta

generated/googleapis/lib/gmail/v1.dart

+library googleapis.gmail.v1;
+
+import "dart:core" as core;
+import "dart:collection" as collection;
+import "dart:async" as async;
+import "dart:convert" as convert;
+
+import "package:crypto/crypto.dart" as crypto;
+import 'package:http/http.dart' as http;
+import '../src/common_internal.dart' as common_internal;
+import '../common/common.dart' as common;
+
+export '../common/common.dart' show ApiRequestError;
+export '../common/common.dart' show DetailedApiRequestError;
+
+/** The Gmail REST API. */
+class GmailApi {
+  /** View and manage your mail */
+  static const MailGoogleComScope = "https://mail.google.com/";
+
+  /** Manage drafts and send emails */
+  static const GmailComposeScope = "https://www.googleapis.com/auth/gmail.compose";
+
+  /** View and modify but not delete your email */
+  static const GmailModifyScope = "https://www.googleapis.com/auth/gmail.modify";
+
+  /** View your emails messages and settings */
+  static const GmailReadonlyScope = "https://www.googleapis.com/auth/gmail.readonly";
+
+
+  final common_internal.ApiRequester _requester;
+
+  UsersResourceApi get users => new UsersResourceApi(_requester);
+
+  GmailApi(http.Client client) : 
+      _requester = new common_internal.ApiRequester(client, "https://www.googleapis.com/", "/gmail/v1/users/");
+}
+
+
+/** Not documented yet. */
+class UsersResourceApi {
+  final common_internal.ApiRequester _requester;
+
+  UsersDraftsResourceApi get drafts => new UsersDraftsResourceApi(_requester);
+  UsersHistoryResourceApi get history => new UsersHistoryResourceApi(_requester);
+  UsersLabelsResourceApi get labels => new UsersLabelsResourceApi(_requester);
+  UsersMessagesResourceApi get messages => new UsersMessagesResourceApi(_requester);
+  UsersThreadsResourceApi get threads => new UsersThreadsResourceApi(_requester);
+
+  UsersResourceApi(common_internal.ApiRequester client) : 
+      _requester = client;
+}
+
+
+/** Not documented yet. */
+class UsersDraftsResourceApi {
+  final common_internal.ApiRequester _requester;
+
+  UsersDraftsResourceApi(common_internal.ApiRequester client) : 
+      _requester = client;
+
+  /**
+   * Creates a new draft with the DRAFT label.
+   *
+   * [request] - The metadata request object.
+   *
+   * Request parameters:
+   *
+   * [userId] - The user's email address. The special value me can be used to
+   * indicate the authenticated user.
+   *
+   * [uploadMedia] - The media to upload.
+   *
+   * [uploadOptions] - Options for the media upload. Streaming Media without the
+   * length being known ahead of time is only supported via resumable uploads.
+   *
+   * Completes with a [Draft].
+   *
+   * Completes with a [common.ApiRequestError] if the API endpoint returned an
+   * error.
+   *
+   * If the used [http.Client] completes with an error when making a REST call,
+   * this method  will complete with the same error.
+   */
+  async.Future<Draft> create(Draft request, core.String userId, {common.UploadOptions uploadOptions : common.UploadOptions.Default, common.Media uploadMedia}) {
+    var _url = null;
+    var _queryParams = new core.Map();
+    var _uploadMedia = null;
+    var _uploadOptions = null;
+    var _downloadOptions = common.DownloadOptions.Metadata;
+    var _body = null;
+
+    if (request != null) {
+      _body = convert.JSON.encode((request).toJson());
+    }
+    if (userId == null) {
+      throw new core.ArgumentError("Parameter userId is required.");
+    }
+
+    _uploadMedia =  uploadMedia;
+    _uploadOptions =  uploadOptions;
+
+    if (_uploadMedia == null) {
+      _url = common_internal.Escaper.ecapeVariable('$userId') + '/drafts';
+    } else if (_uploadOptions is common.ResumableUploadOptions) {
+      _url = '/resumable/upload/gmail/v1/users/' + common_internal.Escaper.ecapeVariable('$userId') + '/drafts';
+    } else {
+      _url = '/upload/gmail/v1/users/' + common_internal.Escaper.ecapeVariable('$userId') + '/drafts';
+    }
+
+
+    var _response = _requester.request(_url,
+                                       "POST",
+                                       body: _body,
+                                       queryParams: _queryParams,
+                                       uploadOptions: _uploadOptions,
+                                       uploadMedia: _uploadMedia,
+                                       downloadOptions: _downloadOptions);
+    return _response.then((data) => new Draft.fromJson(data));
+  }
+
+  /**
+   * Immediately and permanently deletes the specified draft. Does not simply
+   * trash it.
+   *
+   * Request parameters:
+   *
+   * [userId] - The user's email address. The special value me can be used to
+   * indicate the authenticated user.
+   *
+   * [id] - The ID of the draft to delete.
+   *
+   * Completes with a [common.ApiRequestError] if the API endpoint returned an
+   * error.
+   *
+   * If the used [http.Client] completes with an error when making a REST call,
+   * this method  will complete with the same error.
+   */
+  async.Future delete(core.String userId, core.String id) {
+    var _url = null;
+    var _queryParams = new core.Map();
+    var _uploadMedia = null;
+    var _uploadOptions = null;
+    var _downloadOptions = common.DownloadOptions.Metadata;
+    var _body = null;
+
+    if (userId == null) {
+      throw new core.ArgumentError("Parameter userId is required.");
+    }
+    if (id == null) {
+      throw new core.ArgumentError("Parameter id is required.");
+    }
+
+    _downloadOptions = null;
+
+    _url = common_internal.Escaper.ecapeVariable('$userId') + '/drafts/' + common_internal.Escaper.ecapeVariable('$id');
+
+    var _response = _requester.request(_url,
+                                       "DELETE",
+                                       body: _body,
+                                       queryParams: _queryParams,
+                                       uploadOptions: _uploadOptions,
+                                       uploadMedia: _uploadMedia,
+                                       downloadOptions: _downloadOptions);
+    return _response.then((data) => null);
+  }
+
+  /**
+   * Gets the specified draft.
+   *
+   * Request parameters:
+   *
+   * [userId] - The user's email address. The special value me can be used to
+   * indicate the authenticated user.
+   *
+   * [id] - The ID of the draft to retrieve.
+   *
+   * [format] - The format to return the draft in.
+   * Possible string values are:
+   * - "full"
+   * - "metadata"
+   * - "minimal"
+   * - "raw"
+   *
+   * Completes with a [Draft].
+   *
+   * Completes with a [common.ApiRequestError] if the API endpoint returned an
+   * error.
+   *
+   * If the used [http.Client] completes with an error when making a REST call,
+   * this method  will complete with the same error.
+   */
+  async.Future<Draft> get(core.String userId, core.String id, {core.String format}) {
+    var _url = null;
+    var _queryParams = new core.Map();
+    var _uploadMedia = null;
+    var _uploadOptions = null;
+    var _downloadOptions = common.DownloadOptions.Metadata;
+    var _body = null;
+
+    if (userId == null) {
+      throw new core.ArgumentError("Parameter userId is required.");
+    }
+    if (id == null) {
+      throw new core.ArgumentError("Parameter id is required.");
+    }
+    if (format != null) {
+      _queryParams["format"] = [format];
+    }
+
+
+    _url = common_internal.Escaper.ecapeVariable('$userId') + '/drafts/' + common_internal.Escaper.ecapeVariable('$id');
+
+    var _response = _requester.request(_url,
+                                       "GET",
+                                       body: _body,
+                                       queryParams: _queryParams,
+                                       uploadOptions: _uploadOptions,
+                                       uploadMedia: _uploadMedia,
+                                       downloadOptions: _downloadOptions);
+    return _response.then((data) => new Draft.fromJson(data));
+  }
+
+  /**
+   * Lists the drafts in the user's mailbox.
+   *
+   * Request parameters:
+   *
+   * [userId] - The user's email address. The special value me can be used to
+   * indicate the authenticated user.
+   *
+   * [maxResults] - Maximum number of drafts to return.
+   *
+   * [pageToken] - Page token to retrieve a specific page of results in the
+   * list.
+   *
+   * Completes with a [ListDraftsResponse].
+   *
+   * Completes with a [common.ApiRequestError] if the API endpoint returned an
+   * error.
+   *
+   * If the used [http.Client] completes with an error when making a REST call,
+   * this method  will complete with the same error.
+   */
+  async.Future<ListDraftsResponse> list(core.String userId, {core.int maxResults, core.String pageToken}) {
+    var _url = null;
+    var _queryParams = new core.Map();
+    var _uploadMedia = null;
+    var _uploadOptions = null;
+    var _downloadOptions = common.DownloadOptions.Metadata;
+    var _body = null;
+
+    if (userId == null) {
+      throw new core.ArgumentError("Parameter userId is required.");
+    }
+    if (maxResults != null) {
+      _queryParams["maxResults"] = ["${maxResults}"];
+    }
+    if (pageToken != null) {
+      _queryParams["pageToken"] = [pageToken];
+    }
+
+
+    _url = common_internal.Escaper.ecapeVariable('$userId') + '/drafts';
+
+    var _response = _requester.request(_url,
+                                       "GET",
+                                       body: _body,
+                                       queryParams: _queryParams,
+                                       uploadOptions: _uploadOptions,
+                                       uploadMedia: _uploadMedia,
+                                       downloadOptions: _downloadOptions);
+    return _response.then((data) => new ListDraftsResponse.fromJson(data));
+  }
+
+  /**
+   * Sends the specified, existing draft to the recipients in the To, Cc, and
+   * Bcc headers.
+   *
+   * [request] - The metadata request object.
+   *
+   * Request parameters:
+   *
+   * [userId] - The user's email address. The special value me can be used to
+   * indicate the authenticated user.
+   *
+   * [uploadMedia] - The media to upload.
+   *
+   * [uploadOptions] - Options for the media upload. Streaming Media without the
+   * length being known ahead of time is only supported via resumable uploads.
+   *
+   * Completes with a [Message].
+   *
+   * Completes with a [common.ApiRequestError] if the API endpoint returned an
+   * error.
+   *
+   * If the used [http.Client] completes with an error when making a REST call,
+   * this method  will complete with the same error.
+   */
+  async.Future<Message> send(Draft request, core.String userId, {common.UploadOptions uploadOptions : common.UploadOptions.Default, common.Media uploadMedia}) {
+    var _url = null;
+    var _queryParams = new core.Map();
+    var _uploadMedia = null;
+    var _uploadOptions = null;
+    var _downloadOptions = common.DownloadOptions.Metadata;
+    var _body = null;
+
+    if (request != null) {
+      _body = convert.JSON.encode((request).toJson());
+    }
+    if (userId == null) {
+      throw new core.ArgumentError("Parameter userId is required.");
+    }
+
+    _uploadMedia =  uploadMedia;
+    _uploadOptions =  uploadOptions;
+
+    if (_uploadMedia == null) {
+      _url = common_internal.Escaper.ecapeVariable('$userId') + '/drafts/send';
+    } else if (_uploadOptions is common.ResumableUploadOptions) {
+      _url = '/resumable/upload/gmail/v1/users/' + common_internal.Escaper.ecapeVariable('$userId') + '/drafts/send';
+    } else {
+      _url = '/upload/gmail/v1/users/' + common_internal.Escaper.ecapeVariable('$userId') + '/drafts/send';
+    }
+
+
+    var _response = _requester.request(_url,
+                                       "POST",
+                                       body: _body,
+                                       queryParams: _queryParams,
+                                       uploadOptions: _uploadOptions,
+                                       uploadMedia: _uploadMedia,
+                                       downloadOptions: _downloadOptions);
+    return _response.then((data) => new Message.fromJson(data));
+  }
+
+  /**
+   * Replaces a draft's content.
+   *
+   * [request] - The metadata request object.
+   *
+   * Request parameters:
+   *
+   * [userId] - The user's email address. The special value me can be used to
+   * indicate the authenticated user.
+   *
+   * [id] - The ID of the draft to update.
+   *
+   * [uploadMedia] - The media to upload.
+   *
+   * [uploadOptions] - Options for the media upload. Streaming Media without the
+   * length being known ahead of time is only supported via resumable uploads.
+   *
+   * Completes with a [Draft].
+   *
+   * Completes with a [common.ApiRequestError] if the API endpoint returned an
+   * error.
+   *
+   * If the used [http.Client] completes with an error when making a REST call,
+   * this method  will complete with the same error.
+   */
+  async.Future<Draft> update(Draft request, core.String userId, core.String id, {common.UploadOptions uploadOptions : common.UploadOptions.Default, common.Media uploadMedia}) {
+    var _url = null;
+    var _queryParams = new core.Map();
+    var _uploadMedia = null;
+    var _uploadOptions = null;
+    var _downloadOptions = common.DownloadOptions.Metadata;
+    var _body = null;
+
+    if (request != null) {
+      _body = convert.JSON.encode((request).toJson());
+    }
+    if (userId == null) {
+      throw new core.ArgumentError("Parameter userId is required.");
+    }
+    if (id == null) {
+      throw new core.ArgumentError("Parameter id is required.");
+    }
+
+    _uploadMedia =  uploadMedia;
+    _uploadOptions =  uploadOptions;
+
+    if (_uploadMedia == null) {
+      _url = common_internal.Escaper.ecapeVariable('$userId') + '/drafts/' + common_internal.Escaper.ecapeVariable('$id');
+    } else if (_uploadOptions is common.ResumableUploadOptions) {
+      _url = '/resumable/upload/gmail/v1/users/' + common_internal.Escaper.ecapeVariable('$userId') + '/drafts/' + common_internal.Escaper.ecapeVariable('$id');
+    } else {
+      _url = '/upload/gmail/v1/users/' + common_internal.Escaper.ecapeVariable('$userId') + '/drafts/' + common_internal.Escaper.ecapeVariable('$id');
+    }
+
+
+    var _response = _requester.request(_url,
+                                       "PUT",
+                                       body: _body,
+                                       queryParams: _queryParams,
+                                       uploadOptions: _uploadOptions,
+                                       uploadMedia: _uploadMedia,
+                                       downloadOptions: _downloadOptions);
+    return _response.then((data) => new Draft.fromJson(data));
+  }
+
+}
+
+
+/** Not documented yet. */
+class UsersHistoryResourceApi {
+  final common_internal.ApiRequester _requester;
+
+  UsersHistoryResourceApi(common_internal.ApiRequester client) : 
+      _requester = client;
+
+  /**
+   * Lists the history of all changes to the given mailbox. History results are
+   * returned in chronological order (increasing historyId).
+   *
+   * Request parameters:
+   *
+   * [userId] - The user's email address. The special value me can be used to
+   * indicate the authenticated user.
+   *
+   * [labelId] - Only return messages with a label matching the ID.
+   *
+   * [maxResults] - The maximum number of history records to return.
+   *
+   * [pageToken] - Page token to retrieve a specific page of results in the
+   * list.
+   *
+   * [startHistoryId] - Required. Returns history records after the specified
+   * startHistoryId. The supplied startHistoryId should be obtained from the
+   * historyId of a message, thread, or previous list response. History IDs
+   * increase chronologically but are not contiguous with random gaps in between
+   * valid IDs. Supplying an invalid or out of date startHistoryId typically
+   * returns an HTTP 404 error code. A historyId is typically valid for at least
+   * a week, but in some circumstances may be valid for only a few hours. If you
+   * receive an HTTP 404 error response, your application should perform a full
+   * sync. If you receive no nextPageToken in the response, there are no updates
+   * to retrieve and you can store the returned historyId for a future request.
+   *
+   * Completes with a [ListHistoryResponse].
+   *
+   * Completes with a [common.ApiRequestError] if the API endpoint returned an
+   * error.
+   *
+   * If the used [http.Client] completes with an error when making a REST call,
+   * this method  will complete with the same error.
+   */
+  async.Future<ListHistoryResponse> list(core.String userId, {core.String labelId, core.int maxResults, core.String pageToken, core.String startHistoryId}) {
+    var _url = null;
+    var _queryParams = new core.Map();
+    var _uploadMedia = null;
+    var _uploadOptions = null;
+    var _downloadOptions = common.DownloadOptions.Metadata;
+    var _body = null;
+
+    if (userId == null) {
+      throw new core.ArgumentError("Parameter userId is required.");
+    }
+    if (labelId != null) {
+      _queryParams["labelId"] = [labelId];
+    }
+    if (maxResults != null) {
+      _queryParams["maxResults"] = ["${maxResults}"];
+    }
+    if (pageToken != null) {
+      _queryParams["pageToken"] = [pageToken];
+    }
+    if (startHistoryId != null) {
+      _queryParams["startHistoryId"] = [startHistoryId];
+    }
+
+
+    _url = common_internal.Escaper.ecapeVariable('$userId') + '/history';
+
+    var _response = _requester.request(_url,
+                                       "GET",
+                                       body: _body,
+                                       queryParams: _queryParams,
+                                       uploadOptions: _uploadOptions,
+                                       uploadMedia: _uploadMedia,
+                                       downloadOptions: _downloadOptions);
+    return _response.then((data) => new ListHistoryResponse.fromJson(data));
+  }
+
+}
+
+
+/** Not documented yet. */
+class UsersLabelsResourceApi {
+  final common_internal.ApiRequester _requester;
+
+  UsersLabelsResourceApi(common_internal.ApiRequester client) : 
+      _requester = client;
+
+  /**
+   * Creates a new label.
+   *
+   * [request] - The metadata request object.
+   *
+   * Request parameters:
+   *
+   * [userId] - The user's email address. The special value me can be used to
+   * indicate the authenticated user.
+   *
+   * Completes with a [Label].
+   *
+   * Completes with a [common.ApiRequestError] if the API endpoint returned an
+   * error.
+   *
+   * If the used [http.Client] completes with an error when making a REST call,
+   * this method  will complete with the same error.
+   */
+  async.Future<Label> create(Label request, core.String userId) {
+    var _url = null;
+    var _queryParams = new core.Map();
+    var _uploadMedia = null;
+    var _uploadOptions = null;
+    var _downloadOptions = common.DownloadOptions.Metadata;
+    var _body = null;
+
+    if (request != null) {
+      _body = convert.JSON.encode((request).toJson());
+    }
+    if (userId == null) {
+      throw new core.ArgumentError("Parameter userId is required.");
+    }
+
+
+    _url = common_internal.Escaper.ecapeVariable('$userId') + '/labels';
+
+    var _response = _requester.request(_url,
+                                       "POST",
+                                       body: _body,
+                                       queryParams: _queryParams,
+                                       uploadOptions: _uploadOptions,
+                                       uploadMedia: _uploadMedia,
+                                       downloadOptions: _downloadOptions);
+    return _response.then((data) => new Label.fromJson(data));
+  }
+
+  /**
+   * Immediately and permanently deletes the specified label and removes it from
+   * any messages and threads that it is applied to.
+   *
+   * Request parameters:
+   *
+   * [userId] - The user's email address. The special value me can be used to
+   * indicate the authenticated user.
+   *
+   * [id] - The ID of the label to delete.
+   *
+   * Completes with a [common.ApiRequestError] if the API endpoint returned an
+   * error.
+   *
+   * If the used [http.Client] completes with an error when making a REST call,
+   * this method  will complete with the same error.
+   */
+  async.Future delete(core.String userId, core.String id) {
+    var _url = null;
+    var _queryParams = new core.Map();
+    var _uploadMedia = null;
+    var _uploadOptions = null;
+    var _downloadOptions = common.DownloadOptions.Metadata;
+    var _body = null;
+
+    if (userId == null) {
+      throw new core.ArgumentError("Parameter userId is required.");
+    }
+    if (id == null) {
+      throw new core.ArgumentError("Parameter id is required.");
+    }
+
+    _downloadOptions = null;
+
+    _url = common_internal.Escaper.ecapeVariable('$userId') + '/labels/' + common_internal.Escaper.ecapeVariable('$id');
+
+    var _response = _requester.request(_url,
+                                       "DELETE",
+                                       body: _body,
+                                       queryParams: _queryParams,
+                                       uploadOptions: _uploadOptions,
+                                       uploadMedia: _uploadMedia,
+                                       downloadOptions: _downloadOptions);
+    return _response.then((data) => null);
+  }
+
+  /**
+   * Gets the specified label.
+   *
+   * Request parameters:
+   *
+   * [userId] - The user's email address. The special value me can be used to
+   * indicate the authenticated user.
+   *
+   * [id] - The ID of the label to retrieve.
+   *
+   * Completes with a [Label].
+   *
+   * Completes with a [common.ApiRequestError] if the API endpoint returned an
+   * error.
+   *
+   * If the used [http.Client] completes with an error when making a REST call,
+   * this method  will complete with the same error.
+   */
+  async.Future<Label> get(core.String userId, core.String id) {
+    var _url = null;
+    var _queryParams = new core.Map();
+    var _uploadMedia = null;
+    var _uploadOptions = null;
+    var _downloadOptions = common.DownloadOptions.Metadata;
+    var _body = null;
+
+    if (userId == null) {
+      throw new core.ArgumentError("Parameter userId is required.");
+    }
+    if (id == null) {
+      throw new core.ArgumentError("Parameter id is required.");
+    }
+
+
+    _url = common_internal.Escaper.ecapeVariable('$userId') + '/labels/' + common_internal.Escaper.ecapeVariable('$id');
+
+    var _response = _requester.request(_url,
+                                       "GET",
+                                       body: _body,
+                                       queryParams: _queryParams,
+                                       uploadOptions: _uploadOptions,
+                                       uploadMedia: _uploadMedia,
+                                       downloadOptions: _downloadOptions);
+    return _response.then((data) => new Label.fromJson(data));
+  }
+
+  /**
+   * Lists all labels in the user's mailbox.
+   *
+   * Request parameters:
+   *
+   * [userId] - The user's email address. The special value me can be used to
+   * indicate the authenticated user.
+   *
+   * Completes with a [ListLabelsResponse].
+   *
+   * Completes with a [common.ApiRequestError] if the API endpoint returned an
+   * error.
+   *
+   * If the used [http.Client] completes with an error when making a REST call,
+   * this method  will complete with the same error.
+   */
+  async.Future<ListLabelsResponse> list(core.String userId) {
+    var _url = null;
+    var _queryParams = new core.Map();
+    var _uploadMedia = null;
+    var _uploadOptions = null;
+    var _downloadOptions = common.DownloadOptions.Metadata;
+    var _body = null;
+
+    if (userId == null) {
+      throw new core.ArgumentError("Parameter userId is required.");
+    }
+
+
+    _url = common_internal.Escaper.ecapeVariable('$userId') + '/labels';
+
+    var _response = _requester.request(_url,
+                                       "GET",
+                                       body: _body,
+                                       queryParams: _queryParams,
+                                       uploadOptions: _uploadOptions,
+                                       uploadMedia: _uploadMedia,
+                                       downloadOptions: _downloadOptions);
+    return _response.then((data) => new ListLabelsResponse.fromJson(data));
+  }
+
+  /**
+   * Updates the specified label. This method supports patch semantics.
+   *
+   * [request] - The metadata request object.
+   *
+   * Request parameters:
+   *
+   * [userId] - The user's email address. The special value me can be used to
+   * indicate the authenticated user.
+   *
+   * [id] - The ID of the label to update.
+   *
+   * Completes with a [Label].
+   *
+   * Completes with a [common.ApiRequestError] if the API endpoint returned an
+   * error.
+   *
+   * If the used [http.Client] completes with an error when making a REST call,
+   * this method  will complete with the same error.
+   */
+  async.Future<Label> patch(Label request, core.String userId, core.String id) {
+    var _url = null;
+    var _queryParams = new core.Map();
+    var _uploadMedia = null;
+    var _uploadOptions = null;
+    var _downloadOptions = common.DownloadOptions.Metadata;
+    var _body = null;
+
+    if (request != null) {
+      _body = convert.JSON.encode((request).toJson());
+    }
+    if (userId == null) {
+      throw new core.ArgumentError("Parameter userId is required.");
+    }
+    if (id == null) {
+      throw new core.ArgumentError("Parameter id is required.");
+    }
+
+
+    _url = common_internal.Escaper.ecapeVariable('$userId') + '/labels/' + common_internal.Escaper.ecapeVariable('$id');
+
+    var _response = _requester.request(_url,
+                                       "PATCH",
+                                       body: _body,
+                                       queryParams: _queryParams,
+                                       uploadOptions: _uploadOptions,
+                                       uploadMedia: _uploadMedia,
+                                       downloadOptions: _downloadOptions);
+    return _response.then((data) => new Label.fromJson(data));
+  }
+
+  /**
+   * Updates the specified label.
+   *
+   * [request] - The metadata request object.
+   *
+   * Request parameters:
+   *
+   * [userId] - The user's email address. The special value me can be used to
+   * indicate the authenticated user.
+   *
+   * [id] - The ID of the label to update.
+   *
+   * Completes with a [Label].
+   *
+   * Completes with a [common.ApiRequestError] if the API endpoint returned an
+   * error.
+   *
+   * If the used [http.Client] completes with an error when making a REST call,
+   * this method  will complete with the same error.
+   */
+  async.Future<Label> update(Label request, core.String userId, core.String id) {
+    var _url = null;
+    var _queryParams = new core.Map();
+    var _uploadMedia = null;
+    var _uploadOptions = null;
+    var _downloadOptions = common.DownloadOptions.Metadata;
+    var _body = null;
+
+    if (request != null) {
+      _body = convert.JSON.encode((request).toJson());
+    }
+    if (userId == null) {
+      throw new core.ArgumentError("Parameter userId is required.");
+    }
+    if (id == null) {
+      throw new core.ArgumentError("Parameter id is required.");
+    }
+
+
+    _url = common_internal.Escaper.ecapeVariable('$userId') + '/labels/' + common_internal.Escaper.ecapeVariable('$id');
+
+    var _response = _requester.request(_url,
+                                       "PUT",
+                                       body: _body,
+                                       queryParams: _queryParams,
+                                       uploadOptions: _uploadOptions,
+                                       uploadMedia: _uploadMedia,
+                                       downloadOptions: _downloadOptions);
+    return _response.then((data) => new Label.fromJson(data));
+  }
+
+}
+
+
+/** Not documented yet. */
+class UsersMessagesResourceApi {
+  final common_internal.ApiRequester _requester;
+
+  UsersMessagesAttachmentsResourceApi get attachments => new UsersMessagesAttachmentsResourceApi(_requester);
+
+  UsersMessagesResourceApi(common_internal.ApiRequester client) : 
+      _requester = client;
+
+  /**
+   * Immediately and permanently deletes the specified message. This operation
+   * cannot be undone. Prefer messages.trash instead.
+   *
+   * Request parameters:
+   *
+   * [userId] - The user's email address. The special value me can be used to
+   * indicate the authenticated user.
+   *
+   * [id] - The ID of the message to delete.
+   *
+   * Completes with a [common.ApiRequestError] if the API endpoint returned an
+   * error.
+   *
+   * If the used [http.Client] completes with an error when making a REST call,
+   * this method  will complete with the same error.
+   */
+  async.Future delete(core.String userId, core.String id) {
+    var _url = null;
+    var _queryParams = new core.Map();
+    var _uploadMedia = null;
+    var _uploadOptions = null;
+    var _downloadOptions = common.DownloadOptions.Metadata;
+    var _body = null;
+
+    if (userId == null) {
+      throw new core.ArgumentError("Parameter userId is required.");
+    }
+    if (id == null) {
+      throw new core.ArgumentError("Parameter id is required.");
+    }
+
+    _downloadOptions = null;
+
+    _url = common_internal.Escaper.ecapeVariable('$userId') + '/messages/' + common_internal.Escaper.ecapeVariable('$id');
+
+    var _response = _requester.request(_url,
+                                       "DELETE",
+                                       body: _body,
+                                       queryParams: _queryParams,
+                                       uploadOptions: _uploadOptions,
+                                       uploadMedia: _uploadMedia,
+                                       downloadOptions: _downloadOptions);
+    return _response.then((data) => null);
+  }
+
+  /**
+   * Gets the specified message.
+   *
+   * Request parameters:
+   *
+   * [userId] - The user's email address. The special value me can be used to
+   * indicate the authenticated user.
+   *
+   * [id] - The ID of the message to retrieve.
+   *
+   * [format] - The format to return the message in.
+   * Possible string values are:
+   * - "full"
+   * - "metadata"
+   * - "minimal"
+   * - "raw"
+   *
+   * [metadataHeaders] - When given and format is METADATA, only include headers
+   * specified.
+   *
+   * Completes with a [Message].
+   *
+   * Completes with a [common.ApiRequestError] if the API endpoint returned an
+   * error.
+   *
+   * If the used [http.Client] completes with an error when making a REST call,
+   * this method  will complete with the same error.
+   */
+  async.Future<Message> get(core.String userId, core.String id, {core.String format, core.List<core.String> metadataHeaders}) {
+    var _url = null;
+    var _queryParams = new core.Map();
+    var _uploadMedia = null;
+    var _uploadOptions = null;
+    var _downloadOptions = common.DownloadOptions.Metadata;
+    var _body = null;
+
+    if (userId == null) {
+      throw new core.ArgumentError("Parameter userId is required.");
+    }
+    if (id == null) {
+      throw new core.ArgumentError("Parameter id is required.");
+    }
+    if (format != null) {
+      _queryParams["format"] = [format];
+    }
+    if (metadataHeaders != null) {
+      _queryParams["metadataHeaders"] = metadataHeaders;
+    }
+
+
+    _url = common_internal.Escaper.ecapeVariable('$userId') + '/messages/' + common_internal.Escaper.ecapeVariable('$id');
+
+    var _response = _requester.request(_url,
+                                       "GET",
+                                       body: _body,
+                                       queryParams: _queryParams,
+                                       uploadOptions: _uploadOptions,
+                                       uploadMedia: _uploadMedia,
+                                       downloadOptions: _downloadOptions);
+    return _response.then((data) => new Message.fromJson(data));
+  }
+
+  /**
+   * Imports a message into only this user's mailbox, with standard email
+   * delivery scanning and classification similar to receiving via SMTP. Does
+   * not send a message.
+   *
+   * [request] - The metadata request object.
+   *
+   * Request parameters:
+   *
+   * [userId] - The user's email address. The special value me can be used to
+   * indicate the authenticated user.
+   *
+   * [internalDateSource] - Source for Gmail's internal date of the message.
+   * Possible string values are:
+   * - "dateHeader"
+   * - "receivedTime"
+   *
+   * [uploadMedia] - The media to upload.
+   *
+   * [uploadOptions] - Options for the media upload. Streaming Media without the
+   * length being known ahead of time is only supported via resumable uploads.
+   *
+   * Completes with a [Message].
+   *
+   * Completes with a [common.ApiRequestError] if the API endpoint returned an
+   * error.
+   *
+   * If the used [http.Client] completes with an error when making a REST call,
+   * this method  will complete with the same error.
+   */
+  async.Future<Message> import(Message request, core.String userId, {core.String internalDateSource, common.UploadOptions uploadOptions : common.UploadOptions.Default, common.Media uploadMedia}) {
+    var _url = null;
+    var _queryParams = new core.Map();
+    var _uploadMedia = null;
+    var _uploadOptions = null;
+    var _downloadOptions = common.DownloadOptions.Metadata;
+    var _body = null;
+
+    if (request != null) {
+      _body = convert.JSON.encode((request).toJson());
+    }
+    if (userId == null) {
+      throw new core.ArgumentError("Parameter userId is required.");
+    }
+    if (internalDateSource != null) {
+      _queryParams["internalDateSource"] = [internalDateSource];
+    }
+
+    _uploadMedia =  uploadMedia;
+    _uploadOptions =  uploadOptions;
+
+    if (_uploadMedia == null) {
+      _url = common_internal.Escaper.ecapeVariable('$userId') + '/messages/import';
+    } else if (_uploadOptions is common.ResumableUploadOptions) {
+      _url = '/resumable/upload/gmail/v1/users/' + common_internal.Escaper.ecapeVariable('$userId') + '/messages/import';
+    } else {
+      _url = '/upload/gmail/v1/users/' + common_internal.Escaper.ecapeVariable('$userId') + '/messages/import';
+    }
+
+
+    var _response = _requester.request(_url,
+                                       "POST",
+                                       body: _body,
+                                       queryParams: _queryParams,
+                                       uploadOptions: _uploadOptions,
+                                       uploadMedia: _uploadMedia,
+                                       downloadOptions: _downloadOptions);
+    return _response.then((data) => new Message.fromJson(data));
+  }
+
+  /**
+   * Directly inserts a message into only this user's mailbox similar to IMAP
+   * APPEND, bypassing most scanning and classification. Does not send a
+   * message.
+   *
+   * [request] - The metadata request object.
+   *
+   * Request parameters:
+   *
+   * [userId] - The user's email address. The special value me can be used to
+   * indicate the authenticated user.
+   *
+   * [internalDateSource] - Source for Gmail's internal date of the message.
+   * Possible string values are:
+   * - "dateHeader"
+   * - "receivedTime"
+   *
+   * [uploadMedia] - The media to upload.
+   *
+   * [uploadOptions] - Options for the media upload. Streaming Media without the
+   * length being known ahead of time is only supported via resumable uploads.
+   *
+   * Completes with a [Message].
+   *
+   * Completes with a [common.ApiRequestError] if the API endpoint returned an
+   * error.
+   *
+   * If the used [http.Client] completes with an error when making a REST call,
+   * this method  will complete with the same error.
+   */
+  async.Future<Message> insert(Message request, core.String userId, {core.String internalDateSource, common.UploadOptions uploadOptions : common.UploadOptions.Default, common.Media uploadMedia}) {
+    var _url = null;
+    var _queryParams = new core.Map();
+    var _uploadMedia = null;
+    var _uploadOptions = null;
+    var _downloadOptions = common.DownloadOptions.Metadata;
+    var _body = null;
+
+    if (request != null) {
+      _body = convert.JSON.encode((request).toJson());
+    }
+    if (userId == null) {
+      throw new core.ArgumentError("Parameter userId is required.");
+    }
+    if (internalDateSource != null) {
+      _queryParams["internalDateSource"] = [internalDateSource];
+    }
+
+    _uploadMedia =  uploadMedia;
+    _uploadOptions =  uploadOptions;
+
+    if (_uploadMedia == null) {
+      _url = common_internal.Escaper.ecapeVariable('$userId') + '/messages';
+    } else if (_uploadOptions is common.ResumableUploadOptions) {
+      _url = '/resumable/upload/gmail/v1/users/' + common_internal.Escaper.ecapeVariable('$userId') + '/messages';
+    } else {
+      _url = '/upload/gmail/v1/users/' + common_internal.Escaper.ecapeVariable('$userId') + '/messages';
+    }
+
+
+    var _response = _requester.request(_url,
+                                       "POST",
+                                       body: _body,
+                                       queryParams: _queryParams,
+                                       uploadOptions: _uploadOptions,
+                                       uploadMedia: _uploadMedia,
+                                       downloadOptions: _downloadOptions);
+    return _response.then((data) => new Message.fromJson(data));
+  }
+
+  /**
+   * Lists the messages in the user's mailbox.
+   *
+   * Request parameters:
+   *
+   * [userId] - The user's email address. The special value me can be used to
+   * indicate the authenticated user.
+   *
+   * [includeSpamTrash] - Include messages from SPAM and TRASH in the results.
+   *
+   * [labelIds] - Only return messages with labels that match all of the
+   * specified label IDs.
+   *
+   * [maxResults] - Maximum number of messages to return.
+   *
+   * [pageToken] - Page token to retrieve a specific page of results in the
+   * list.
+   *
+   * [q] - Only return messages matching the specified query. Supports the same
+   * query format as the Gmail search box. For example,
+   * "from:someuser@example.com rfc822msgid: is:unread".
+   *
+   * Completes with a [ListMessagesResponse].
+   *
+   * Completes with a [common.ApiRequestError] if the API endpoint returned an
+   * error.
+   *
+   * If the used [http.Client] completes with an error when making a REST call,
+   * this method  will complete with the same error.
+   */
+  async.Future<ListMessagesResponse> list(core.String userId, {core.bool includeSpamTrash, core.List<core.String> labelIds, core.int maxResults, core.String pageToken, core.String q}) {
+    var _url = null;
+    var _queryParams = new core.Map();
+    var _uploadMedia = null;
+    var _uploadOptions = null;
+    var _downloadOptions = common.DownloadOptions.Metadata;
+    var _body = null;
+
+    if (userId == null) {
+      throw new core.ArgumentError("Parameter userId is required.");
+    }
+    if (includeSpamTrash != null) {
+      _queryParams["includeSpamTrash"] = ["${includeSpamTrash}"];
+    }
+    if (labelIds != null) {
+      _queryParams["labelIds"] = labelIds;
+    }
+    if (maxResults != null) {
+      _queryParams["maxResults"] = ["${maxResults}"];
+    }
+    if (pageToken != null) {
+      _queryParams["pageToken"] = [pageToken];
+    }
+    if (q != null) {
+      _queryParams["q"] = [q];
+    }
+
+
+    _url = common_internal.Escaper.ecapeVariable('$userId') + '/messages';
+
+    var _response = _requester.request(_url,
+                                       "GET",
+                                       body: _body,
+                                       queryParams: _queryParams,
+                                       uploadOptions: _uploadOptions,
+                                       uploadMedia: _uploadMedia,
+                                       downloadOptions: _downloadOptions);
+    return _response.then((data) => new ListMessagesResponse.fromJson(data));
+  }
+
+  /**
+   * Modifies the labels on the specified message.
+   *
+   * [request] - The metadata request object.
+   *
+   * Request parameters:
+   *
+   * [userId] - The user's email address. The special value me can be used to
+   * indicate the authenticated user.
+   *
+   * [id] - The ID of the message to modify.
+   *
+   * Completes with a [Message].
+   *
+   * Completes with a [common.ApiRequestError] if the API endpoint returned an
+   * error.
+   *
+   * If the used [http.Client] completes with an error when making a REST call,
+   * this method  will complete with the same error.
+   */
+  async.Future<Message> modify(ModifyMessageRequest request, core.String userId, core.String id) {
+    var _url = null;
+    var _queryParams = new core.Map();
+    var _uploadMedia = null;
+    var _uploadOptions = null;
+    var _downloadOptions = common.DownloadOptions.Metadata;
+    var _body = null;
+
+    if (request != null) {
+      _body = convert.JSON.encode((request).toJson());
+    }
+    if (userId == null) {
+      throw new core.ArgumentError("Parameter userId is required.");
+    }
+    if (id == null) {
+      throw new core.ArgumentError("Parameter id is required.");
+    }
+
+
+    _url = common_internal.Escaper.ecapeVariable('$userId') + '/messages/' + common_internal.Escaper.ecapeVariable('$id') + '/modify';
+
+    var _response = _requester.request(_url,
+                                       "POST",
+                                       body: _body,
+                                       queryParams: _queryParams,
+                                       uploadOptions: _uploadOptions,
+                                       uploadMedia: _uploadMedia,
+                                       downloadOptions: _downloadOptions);
+    return _response.then((data) => new Message.fromJson(data));
+  }
+
+  /**
+   * Sends the specified message to the recipients in the To, Cc, and Bcc
+   * headers.
+   *
+   * [request] - The metadata request object.
+   *
+   * Request parameters:
+   *
+   * [userId] - The user's email address. The special value me can be used to
+   * indicate the authenticated user.
+   *
+   * [uploadMedia] - The media to upload.
+   *
+   * [uploadOptions] - Options for the media upload. Streaming Media without the
+   * length being known ahead of time is only supported via resumable uploads.
+   *
+   * Completes with a [Message].
+   *
+   * Completes with a [common.ApiRequestError] if the API endpoint returned an
+   * error.
+   *
+   * If the used [http.Client] completes with an error when making a REST call,
+   * this method  will complete with the same error.
+   */
+  async.Future<Message> send(Message request, core.String userId, {common.UploadOptions uploadOptions : common.UploadOptions.Default, common.Media uploadMedia}) {
+    var _url = null;
+    var _queryParams = new core.Map();
+    var _uploadMedia = null;
+    var _uploadOptions = null;
+    var _downloadOptions = common.DownloadOptions.Metadata;
+    var _body = null;
+
+    if (request != null) {
+      _body = convert.JSON.encode((request).toJson());
+    }
+    if (userId == null) {
+      throw new core.ArgumentError("Parameter userId is required.");
+    }
+
+    _uploadMedia =  uploadMedia;
+    _uploadOptions =  uploadOptions;
+
+    if (_uploadMedia == null) {
+      _url = common_internal.Escaper.ecapeVariable('$userId') + '/messages/send';
+    } else if (_uploadOptions is common.ResumableUploadOptions) {
+      _url = '/resumable/upload/gmail/v1/users/' + common_internal.Escaper.ecapeVariable('$userId') + '/messages/send';
+    } else {
+      _url = '/upload/gmail/v1/users/' + common_internal.Escaper.ecapeVariable('$userId') + '/messages/send';
+    }
+
+
+    var _response = _requester.request(_url,
+                                       "POST",
+                                       body: _body,
+                                       queryParams: _queryParams,
+                                       uploadOptions: _uploadOptions,
+                                       uploadMedia: _uploadMedia,
+                                       downloadOptions: _downloadOptions);
+    return _response.then((data) => new Message.fromJson(data));
+  }
+
+  /**
+   * Moves the specified message to the trash.
+   *
+   * Request parameters:
+   *
+   * [userId] - The user's email address. The special value me can be used to
+   * indicate the authenticated user.
+   *
+   * [id] - The ID of the message to Trash.
+   *
+   * Completes with a [Message].
+   *
+   * Completes with a [common.ApiRequestError] if the API endpoint returned an
+   * error.
+   *
+   * If the used [http.Client] completes with an error when making a REST call,
+   * this method  will complete with the same error.
+   */
+  async.Future<Message> trash(core.String userId, core.String id) {
+    var _url = null;
+    var _queryParams = new core.Map();
+    var _uploadMedia = null;
+    var _uploadOptions = null;
+    var _downloadOptions = common.DownloadOptions.Metadata;
+    var _body = null;
+
+    if (userId == null) {
+      throw new core.ArgumentError("Parameter userId is required.");
+    }
+    if (id == null) {
+      throw new core.ArgumentError("Parameter id is required.");
+    }
+
+
+    _url = common_internal.Escaper.ecapeVariable('$userId') + '/messages/' + common_internal.Escaper.ecapeVariable('$id') + '/trash';
+
+    var _response = _requester.request(_url,
+                                       "POST",
+                                       body: _body,
+                                       queryParams: _queryParams,
+                                       uploadOptions: _uploadOptions,
+                                       uploadMedia: _uploadMedia,
+                                       downloadOptions: _downloadOptions);
+    return _response.then((data) => new Message.fromJson(data));
+  }
+
+  /**
+   * Removes the specified message from the trash.
+   *
+   * Request parameters:
+   *
+   * [userId] - The user's email address. The special value me can be used to
+   * indicate the authenticated user.
+   *
+   * [id] - The ID of the message to remove from Trash.
+   *
+   * Completes with a [Message].
+   *
+   * Completes with a [common.ApiRequestError] if the API endpoint returned an
+   * error.
+   *
+   * If the used [http.Client] completes with an error when making a REST call,
+   * this method  will complete with the same error.
+   */
+  async.Future<Message> untrash(core.String userId, core.String id) {
+    var _url = null;
+    var _queryParams = new core.Map();
+    var _uploadMedia = null;
+    var _uploadOptions = null;
+    var _downloadOptions = common.DownloadOptions.Metadata;
+    var _body = null;
+
+    if (userId == null) {
+      throw new core.ArgumentError("Parameter userId is required.");
+    }
+    if (id == null) {
+      throw new core.ArgumentError("Parameter id is required.");
+    }
+
+
+    _url = common_internal.Escaper.ecapeVariable('$userId') + '/messages/' + common_internal.Escaper.ecapeVariable('$id') + '/untrash';
+
+    var _response = _requester.request(_url,
+                                       "POST",
+                                       body: _body,
+                                       queryParams: _queryParams,
+                                       uploadOptions: _uploadOptions,
+                                       uploadMedia: _uploadMedia,
+                                       downloadOptions: _downloadOptions);
+    return _response.then((data) => new Message.fromJson(data));
+  }
+
+}
+
+
+/** Not documented yet. */
+class UsersMessagesAttachmentsResourceApi {
+  final common_internal.ApiRequester _requester;
+
+  UsersMessagesAttachmentsResourceApi(common_internal.ApiRequester client) : 
+      _requester = client;
+
+  /**
+   * Gets the specified message attachment.
+   *
+   * Request parameters:
+   *
+   * [userId] - The user's email address. The special value me can be used to
+   * indicate the authenticated user.
+   *
+   * [messageId] - The ID of the message containing the attachment.
+   *
+   * [id] - The ID of the attachment.
+   *
+   * Completes with a [MessagePartBody].
+   *
+   * Completes with a [common.ApiRequestError] if the API endpoint returned an
+   * error.
+   *
+   * If the used [http.Client] completes with an error when making a REST call,
+   * this method  will complete with the same error.
+   */
+  async.Future<MessagePartBody> get(core.String userId, core.String messageId, core.String id) {
+    var _url = null;
+    var _queryParams = new core.Map();
+    var _uploadMedia = null;
+    var _uploadOptions = null;
+    var _downloadOptions = common.DownloadOptions.Metadata;
+    var _body = null;
+
+    if (userId == null) {
+      throw new core.ArgumentError("Parameter userId is required.");
+    }
+    if (messageId == null) {
+      throw new core.ArgumentError("Parameter messageId is required.");
+    }
+    if (id == null) {
+      throw new core.ArgumentError("Parameter id is required.");
+    }
+
+
+    _url = common_internal.Escaper.ecapeVariable('$userId') + '/messages/' + common_internal.Escaper.ecapeVariable('$messageId') + '/attachments/' + common_internal.Escaper.ecapeVariable('$id');
+
+    var _response = _requester.request(_url,
+                                       "GET",
+                                       body: _body,
+                                       queryParams: _queryParams,
+                                       uploadOptions: _uploadOptions,
+                                       uploadMedia: _uploadMedia,
+                                       downloadOptions: _downloadOptions);
+    return _response.then((data) => new MessagePartBody.fromJson(data));
+  }
+
+}
+
+
+/** Not documented yet. */
+class UsersThreadsResourceApi {
+  final common_internal.ApiRequester _requester;
+
+  UsersThreadsResourceApi(common_internal.ApiRequester client) : 
+      _requester = client;
+
+  /**
+   * Immediately and permanently deletes the specified thread. This operation
+   * cannot be undone. Prefer threads.trash instead.
+   *
+   * Request parameters:
+   *
+   * [userId] - The user's email address. The special value me can be used to
+   * indicate the authenticated user.
+   *
+   * [id] - ID of the Thread to delete.
+   *
+   * Completes with a [common.ApiRequestError] if the API endpoint returned an
+   * error.
+   *
+   * If the used [http.Client] completes with an error when making a REST call,
+   * this method  will complete with the same error.
+   */
+  async.Future delete(core.String userId, core.String id) {
+    var _url = null;
+    var _queryParams = new core.Map();
+    var _uploadMedia = null;
+    var _uploadOptions = null;
+    var _downloadOptions = common.DownloadOptions.Metadata;
+    var _body = null;
+
+    if (userId == null) {
+      throw new core.ArgumentError("Parameter userId is required.");
+    }
+    if (id == null) {
+      throw new core.ArgumentError("Parameter id is required.");
+    }
+
+    _downloadOptions = null;
+
+    _url = common_internal.Escaper.ecapeVariable('$userId') + '/threads/' + common_internal.Escaper.ecapeVariable('$id');
+
+    var _response = _requester.request(_url,
+                                       "DELETE",
+                                       body: _body,
+                                       queryParams: _queryParams,
+                                       uploadOptions: _uploadOptions,
+                                       uploadMedia: _uploadMedia,
+                                       downloadOptions: _downloadOptions);
+    return _response.then((data) => null);
+  }
+
+  /**
+   * Gets the specified thread.
+   *
+   * Request parameters:
+   *
+   * [userId] - The user's email address. The special value me can be used to
+   * indicate the authenticated user.
+   *
+   * [id] - The ID of the thread to retrieve.
+   *
+   * Completes with a [Thread].
+   *
+   * Completes with a [common.ApiRequestError] if the API endpoint returned an
+   * error.
+   *
+   * If the used [http.Client] completes with an error when making a REST call,
+   * this method  will complete with the same error.
+   */
+  async.Future<Thread> get(core.String userId, core.String id) {
+    var _url = null;
+    var _queryParams = new core.Map();
+    var _uploadMedia = null;
+    var _uploadOptions = null;
+    var _downloadOptions = common.DownloadOptions.Metadata;
+    var _body = null;
+
+    if (userId == null) {
+      throw new core.ArgumentError("Parameter userId is required.");
+    }
+    if (id == null) {
+      throw new core.ArgumentError("Parameter id is required.");
+    }
+
+
+    _url = common_internal.Escaper.ecapeVariable('$userId') + '/threads/' + common_internal.Escaper.ecapeVariable('$id');
+
+    var _response = _requester.request(_url,
+                                       "GET",
+                                       body: _body,
+                                       queryParams: _queryParams,
+                                       uploadOptions: _uploadOptions,
+                                       uploadMedia: _uploadMedia,
+                                       downloadOptions: _downloadOptions);
+    return _response.then((data) => new Thread.fromJson(data));
+  }
+
+  /**
+   * Lists the threads in the user's mailbox.
+   *
+   * Request parameters:
+   *
+   * [userId] - The user's email address. The special value me can be used to
+   * indicate the authenticated user.
+   *
+   * [includeSpamTrash] - Include threads from SPAM and TRASH in the results.
+   *
+   * [labelIds] - Only return threads with labels that match all of the
+   * specified label IDs.
+   *
+   * [maxResults] - Maximum number of threads to return.
+   *
+   * [pageToken] - Page token to retrieve a specific page of results in the
+   * list.
+   *
+   * [q] - Only return threads matching the specified query. Supports the same
+   * query format as the Gmail search box. For example,
+   * "from:someuser@example.com rfc822msgid: is:unread".
+   *
+   * Completes with a [ListThreadsResponse].
+   *
+   * Completes with a [common.ApiRequestError] if the API endpoint returned an
+   * error.
+   *
+   * If the used [http.Client] completes with an error when making a REST call,
+   * this method  will complete with the same error.
+   */
+  async.Future<ListThreadsResponse> list(core.String userId, {core.bool includeSpamTrash, core.List<core.String> labelIds, core.int maxResults, core.String pageToken, core.String q}) {
+    var _url = null;
+    var _queryParams = new core.Map();
+    var _uploadMedia = null;
+    var _uploadOptions = null;
+    var _downloadOptions = common.DownloadOptions.Metadata;
+    var _body = null;
+
+    if (userId == null) {
+      throw new core.ArgumentError("Parameter userId is required.");
+    }
+    if (includeSpamTrash != null) {
+      _queryParams["includeSpamTrash"] = ["${includeSpamTrash}"];
+    }
+    if (labelIds != null) {
+      _queryParams["labelIds"] = labelIds;
+    }
+    if (maxResults != null) {
+      _queryParams["maxResults"] = ["${maxResults}"];
+    }
+    if (pageToken != null) {
+      _queryParams["pageToken"] = [pageToken];
+    }
+    if (q != null) {
+      _queryParams["q"] = [q];
+    }
+
+
+    _url = common_internal.Escaper.ecapeVariable('$userId') + '/threads';
+
+    var _response = _requester.request(_url,
+                                       "GET",
+                                       body: _body,
+                                       queryParams: _queryParams,
+                                       uploadOptions: _uploadOptions,
+                                       uploadMedia: _uploadMedia,
+                                       downloadOptions: _downloadOptions);
+    return _response.then((data) => new ListThreadsResponse.fromJson(data));
+  }
+
+  /**
+   * Modifies the labels applied to the thread. This applies to all messages in
+   * the thread.
+   *
+   * [request] - The metadata request object.
+   *
+   * Request parameters:
+   *
+   * [userId] - The user's email address. The special value me can be used to
+   * indicate the authenticated user.
+   *
+   * [id] - The ID of the thread to modify.
+   *
+   * Completes with a [Thread].
+   *
+   * Completes with a [common.ApiRequestError] if the API endpoint returned an
+   * error.
+   *
+   * If the used [http.Client] completes with an error when making a REST call,
+   * this method  will complete with the same error.
+   */
+  async.Future<Thread> modify(ModifyThreadRequest request, core.String userId, core.String id) {
+    var _url = null;
+    var _queryParams = new core.Map();
+    var _uploadMedia = null;
+    var _uploadOptions = null;
+    var _downloadOptions = common.DownloadOptions.Metadata;
+    var _body = null;
+
+    if (request != null) {
+      _body = convert.JSON.encode((request).toJson());
+    }
+    if (userId == null) {
+      throw new core.ArgumentError("Parameter userId is required.");
+    }
+    if (id == null) {
+      throw new core.ArgumentError("Parameter id is required.");
+    }
+
+
+    _url = common_internal.Escaper.ecapeVariable('$userId') + '/threads/' + common_internal.Escaper.ecapeVariable('$id') + '/modify';
+
+    var _response = _requester.request(_url,
+                                       "POST",
+                                       body: _body,
+                                       queryParams: _queryParams,
+                                       uploadOptions: _uploadOptions,
+                                       uploadMedia: _uploadMedia,
+                                       downloadOptions: _downloadOptions);
+    return _response.then((data) => new Thread.fromJson(data));
+  }
+
+  /**
+   * Moves the specified thread to the trash.
+   *
+   * Request parameters:
+   *
+   * [userId] - The user's email address. The special value me can be used to
+   * indicate the authenticated user.
+   *
+   * [id] - The ID of the thread to Trash.
+   *
+   * Completes with a [Thread].
+   *
+   * Completes with a [common.ApiRequestError] if the API endpoint returned an
+   * error.
+   *
+   * If the used [http.Client] completes with an error when making a REST call,
+   * this method  will complete with the same error.
+   */
+  async.Future<Thread> trash(core.String userId, core.String id) {
+    var _url = null;
+    var _queryParams = new core.Map();
+    var _uploadMedia = null;
+    var _uploadOptions = null;
+    var _downloadOptions = common.DownloadOptions.Metadata;
+    var _body = null;
+
+    if (userId == null) {
+      throw new core.ArgumentError("Parameter userId is required.");
+    }
+    if (id == null) {
+      throw new core.ArgumentError("Parameter id is required.");
+    }
+
+
+    _url = common_internal.Escaper.ecapeVariable('$userId') + '/threads/' + common_internal.Escaper.ecapeVariable('$id') + '/trash';
+
+    var _response = _requester.request(_url,
+                                       "POST",
+                                       body: _body,
+                                       queryParams: _queryParams,
+                                       uploadOptions: _uploadOptions,
+                                       uploadMedia: _uploadMedia,
+                                       downloadOptions: _downloadOptions);
+    return _response.then((data) => new Thread.fromJson(data));
+  }
+
+  /**
+   * Removes the specified thread from the trash.
+   *
+   * Request parameters:
+   *
+   * [userId] - The user's email address. The special value me can be used to
+   * indicate the authenticated user.
+   *
+   * [id] - The ID of the thread to remove from Trash.
+   *
+   * Completes with a [Thread].
+   *
+   * Completes with a [common.ApiRequestError] if the API endpoint returned an
+   * error.
+   *
+   * If the used [http.Client] completes with an error when making a REST call,
+   * this method  will complete with the same error.
+   */
+  async.Future<Thread> untrash(core.String userId, core.String id) {
+    var _url = null;
+    var _queryParams = new core.Map();
+    var _uploadMedia = null;
+    var _uploadOptions = null;
+    var _downloadOptions = common.DownloadOptions.Metadata;
+    var _body = null;
+
+    if (userId == null) {
+      throw new core.ArgumentError("Parameter userId is required.");
+    }
+    if (id == null) {
+      throw new core.ArgumentError("Parameter id is required.");
+    }
+
+
+    _url = common_internal.Escaper.ecapeVariable('$userId') + '/threads/' + common_internal.Escaper.ecapeVariable('$id') + '/untrash';
+
+    var _response = _requester.request(_url,
+                                       "POST",
+                                       body: _body,
+                                       queryParams: _queryParams,
+                                       uploadOptions: _uploadOptions,
+                                       uploadMedia: _uploadMedia,
+                                       downloadOptions: _downloadOptions);
+    return _response.then((data) => new Thread.fromJson(data));
+  }
+
+}
+
+
+
+/** A draft email in the user's mailbox. */
+class Draft {
+  /** The immutable ID of the draft. */
+  core.String id;
+
+  /** The message content of the draft. */
+  Message message;
+
+
+  Draft();
+
+  Draft.fromJson(core.Map _json) {
+    if (_json.containsKey("id")) {
+      id = _json["id"];
+    }
+    if (_json.containsKey("message")) {
+      message = new Message.fromJson(_json["message"]);
+    }
+  }
+
+  core.Map toJson() {
+    var _json = new core.Map();
+    if (id != null) {
+      _json["id"] = id;
+    }
+    if (message != null) {
+      _json["message"] = (message).toJson();
+    }
+    return _json;
+  }
+}
+
+
+/**
+ * A record of a change to the user's mailbox. Each history contains a list of
+ * the messages that were affected by this change.
+ */
+class History {
+  /** The mailbox sequence ID. */
+  core.String id;
+
+  /** The messages that changed in this history record. */
+  core.List<Message> messages;
+
+
+  History();
+
+  History.fromJson(core.Map _json) {
+    if (_json.containsKey("id")) {
+      id = _json["id"];
+    }
+    if (_json.containsKey("messages")) {
+      messages = _json["messages"].map((value) => new Message.fromJson(value)).toList();
+    }
+  }
+
+  core.Map toJson() {
+    var _json = new core.Map();
+    if (id != null) {
+      _json["id"] = id;
+    }
+    if (messages != null) {
+      _json["messages"] = messages.map((value) => (value).toJson()).toList();
+    }
+    return _json;
+  }
+}
+
+
+/**
+ * Labels are used to categorize messages and threads within the user's mailbox.
+ */
+class Label {
+  /** The immutable ID of the label. */
+  core.String id;
+
+  /**
+   * The visibility of the label in the label list in the Gmail web interface.
+   * Possible string values are:
+   * - "labelHide"
+   * - "labelShow"
+   * - "labelShowIfUnread"
+   */
+  core.String labelListVisibility;
+
+  /**
+   * The visibility of the label in the message list in the Gmail web interface.
+   * Possible string values are:
+   * - "hide"
+   * - "show"
+   */
+  core.String messageListVisibility;
+
+  /** The display name of the label. */
+  core.String name;
+
+  /**
+   * The owner type for the label. User labels are created by the user and can
+   * be modified and deleted by the user and can be applied to any message or
+   * thread. System labels are internally created and cannot be added, modified,
+   * or deleted. System labels may be able to be applied to or removed from
+   * messages and threads under some circumstances but this is not guaranteed.
+   * For example, users can apply and remove the INBOX and UNREAD labels from
+   * messages and threads, but cannot apply or remove the DRAFTS or SENT labels
+   * from messages or threads.
+   * Possible string values are:
+   * - "system"
+   * - "user"
+   */
+  core.String type;
+
+
+  Label();
+
+  Label.fromJson(core.Map _json) {
+    if (_json.containsKey("id")) {
+      id = _json["id"];
+    }
+    if (_json.containsKey("labelListVisibility")) {
+      labelListVisibility = _json["labelListVisibility"];
+    }
+    if (_json.containsKey("messageListVisibility")) {
+      messageListVisibility = _json["messageListVisibility"];
+    }
+    if (_json.containsKey("name")) {
+      name = _json["name"];
+    }
+    if (_json.containsKey("type")) {
+      type = _json["type"];
+    }
+  }
+
+  core.Map toJson() {
+    var _json = new core.Map();
+    if (id != null) {
+      _json["id"] = id;
+    }
+    if (labelListVisibility != null) {
+      _json["labelListVisibility"] = labelListVisibility;
+    }
+    if (messageListVisibility != null) {
+      _json["messageListVisibility"] = messageListVisibility;
+    }
+    if (name != null) {
+      _json["name"] = name;
+    }
+    if (type != null) {
+      _json["type"] = type;
+    }
+    return _json;
+  }
+}
+
+
+/** Not documented yet. */
+class ListDraftsResponse {
+  /** List of drafts. */
+  core.List<Draft> drafts;
+
+  /** Token to retrieve the next page of results in the list. */
+  core.String nextPageToken;
+
+  /** Estimated total number of results. */
+  core.int resultSizeEstimate;
+
+
+  ListDraftsResponse();
+
+  ListDraftsResponse.fromJson(core.Map _json) {
+    if (_json.containsKey("drafts")) {
+      drafts = _json["drafts"].map((value) => new Draft.fromJson(value)).toList();
+    }
+    if (_json.containsKey("nextPageToken")) {
+      nextPageToken = _json["nextPageToken"];
+    }
+    if (_json.containsKey("resultSizeEstimate")) {
+      resultSizeEstimate = _json["resultSizeEstimate"];
+    }
+  }
+
+  core.Map toJson() {
+    var _json = new core.Map();
+    if (drafts != null) {
+      _json["drafts"] = drafts.map((value) => (value).toJson()).toList();
+    }
+    if (nextPageToken != null) {
+      _json["nextPageToken"] = nextPageToken;
+    }
+    if (resultSizeEstimate != null) {
+      _json["resultSizeEstimate"] = resultSizeEstimate;
+    }
+    return _json;
+  }
+}
+
+
+/** Not documented yet. */
+class ListHistoryResponse {
+  /** List of history records. */
+  core.List<History> history;
+
+  /** The ID of the mailbox's current history record. */
+  core.String historyId;
+
+  /** Page token to retrieve the next page of results in the list. */
+  core.String nextPageToken;
+
+
+  ListHistoryResponse();
+
+  ListHistoryResponse.fromJson(core.Map _json) {
+    if (_json.containsKey("history")) {
+      history = _json["history"].map((value) => new History.fromJson(value)).toList();
+    }
+    if (_json.containsKey("historyId")) {
+      historyId = _json["historyId"];
+    }
+    if (_json.containsKey("nextPageToken")) {
+      nextPageToken = _json["nextPageToken"];
+    }
+  }
+
+  core.Map toJson() {
+    var _json = new core.Map();
+    if (history != null) {
+      _json["history"] = history.map((value) => (value).toJson()).toList();
+    }
+    if (historyId != null) {
+      _json["historyId"] = historyId;
+    }
+    if (nextPageToken != null) {
+      _json["nextPageToken"] = nextPageToken;
+    }
+    return _json;
+  }
+}
+
+
+/** Not documented yet. */
+class ListLabelsResponse {
+  /** List of labels. */
+  core.List<Label> labels;
+
+
+  ListLabelsResponse();
+
+  ListLabelsResponse.fromJson(core.Map _json) {
+    if (_json.containsKey("labels")) {
+      labels = _json["labels"].map((value) => new Label.fromJson(value)).toList();
+    }
+  }
+
+  core.Map toJson() {
+    var _json = new core.Map();
+    if (labels != null) {
+      _json["labels"] = labels.map((value) => (value).toJson()).toList();
+    }
+    return _json;
+  }
+}
+
+
+/** Not documented yet. */
+class ListMessagesResponse {
+  /** List of messages. */
+  core.List<Message> messages;
+
+  /** Token to retrieve the next page of results in the list. */
+  core.String nextPageToken;
+
+  /** Estimated total number of results. */
+  core.int resultSizeEstimate;
+
+
+  ListMessagesResponse();
+
+  ListMessagesResponse.fromJson(core.Map _json) {
+    if (_json.containsKey("messages")) {
+      messages = _json["messages"].map((value) => new Message.fromJson(value)).toList();
+    }
+    if (_json.containsKey("nextPageToken")) {
+      nextPageToken = _json["nextPageToken"];
+    }
+    if (_json.containsKey("resultSizeEstimate")) {
+      resultSizeEstimate = _json["resultSizeEstimate"];
+    }
+  }
+
+  core.Map toJson() {
+    var _json = new core.Map();
+    if (messages != null) {
+      _json["messages"] = messages.map((value) => (value).toJson()).toList();
+    }
+    if (nextPageToken != null) {
+      _json["nextPageToken"] = nextPageToken;
+    }
+    if (resultSizeEstimate != null) {
+      _json["resultSizeEstimate"] = resultSizeEstimate;
+    }
+    return _json;
+  }
+}
+
+
+/** Not documented yet. */
+class ListThreadsResponse {
+  /** Page token to retrieve the next page of results in the list. */
+  core.String nextPageToken;
+
+  /** Estimated total number of results. */
+  core.int resultSizeEstimate;
+
+  /** List of threads. */
+  core.List<Thread> threads;
+
+
+  ListThreadsResponse();
+
+  ListThreadsResponse.fromJson(core.Map _json) {
+    if (_json.containsKey("nextPageToken")) {
+      nextPageToken = _json["nextPageToken"];
+    }
+    if (_json.containsKey("resultSizeEstimate")) {
+      resultSizeEstimate = _json["resultSizeEstimate"];
+    }
+    if (_json.containsKey("threads")) {
+      threads = _json["threads"].map((value) => new Thread.fromJson(value)).toList();
+    }
+  }
+
+  core.Map toJson() {
+    var _json = new core.Map();
+    if (nextPageToken != null) {
+      _json["nextPageToken"] = nextPageToken;
+    }
+    if (resultSizeEstimate != null) {
+      _json["resultSizeEstimate"] = resultSizeEstimate;
+    }
+    if (threads != null) {
+      _json["threads"] = threads.map((value) => (value).toJson()).toList();
+    }
+    return _json;
+  }
+}
+
+
+/** An email message. */
+class Message {
+  /** The ID of the last history record that modified this message. */
+  core.String historyId;
+
+  /** The immutable ID of the message. */
+  core.String id;
+
+  /** List of IDs of labels applied to this message. */
+  core.List<core.String> labelIds;
+
+  /** The parsed email structure in the message parts. */
+  MessagePart payload;
+
+  /**
+   * The entire email message in an RFC 2822 formatted and URL-safe base64
+   * encoded string. Returned in messages.get and drafts.get responses when the
+   * format=RAW parameter is supplied.
+   */
+  core.String raw;
+
+  core.List<core.int> get rawAsBytes {
+    return crypto.CryptoUtils.base64StringToBytes(raw);
+  }
+
+  void set rawAsBytes(core.List<core.int> _bytes) {
+    raw = crypto.CryptoUtils.bytesToBase64(_bytes, urlSafe: true);
+  }
+
+  /** Estimated size in bytes of the message. */
+  core.int sizeEstimate;
+
+  /** A short part of the message text. */
+  core.String snippet;
+
+  /**
+   * The ID of the thread the message belongs to. To add a message or draft to a
+   * thread, the following criteria must be met:
+   * - The requested threadId must be specified on the Message or Draft.Message
+   * you supply with your request.
+   * - The References and In-Reply-To headers must be set in compliance with the
+   * <a href="https://tools.ietf.org/html/rfc2822"RFC 2822 standard.
+   * - The Subject headers must match.
+   */
+  core.String threadId;
+
+
+  Message();
+
+  Message.fromJson(core.Map _json) {
+    if (_json.containsKey("historyId")) {
+      historyId = _json["historyId"];
+    }
+    if (_json.containsKey("id")) {
+      id = _json["id"];
+    }
+    if (_json.containsKey("labelIds")) {
+      labelIds = _json["labelIds"];
+    }
+    if (_json.containsKey("payload")) {
+      payload = new MessagePart.fromJson(_json["payload"]);
+    }
+    if (_json.containsKey("raw")) {
+      raw = _json["raw"];
+    }
+    if (_json.containsKey("sizeEstimate")) {
+      sizeEstimate = _json["sizeEstimate"];
+    }
+    if (_json.containsKey("snippet")) {
+      snippet = _json["snippet"];
+    }
+    if (_json.containsKey("threadId")) {
+      threadId = _json["threadId"];
+    }
+  }
+
+  core.Map toJson() {
+    var _json = new core.Map();
+    if (historyId != null) {
+      _json["historyId"] = historyId;
+    }
+    if (id != null) {
+      _json["id"] = id;
+    }
+    if (labelIds != null) {
+      _json["labelIds"] = labelIds;
+    }
+    if (payload != null) {
+      _json["payload"] = (payload).toJson();
+    }
+    if (raw != null) {
+      _json["raw"] = raw;
+    }
+    if (sizeEstimate != null) {
+      _json["sizeEstimate"] = sizeEstimate;
+    }
+    if (snippet != null) {
+      _json["snippet"] = snippet;
+    }
+    if (threadId != null) {
+      _json["threadId"] = threadId;
+    }
+    return _json;
+  }
+}
+
+
+/** A single MIME message part. */
+class MessagePart {
+  /**
+   * The message part body for this part, which may be empty for container MIME
+   * message parts.
+   */
+  MessagePartBody body;
+
+  /**
+   * The filename of the attachment. Only present if this message part
+   * represents an attachment.
+   */
+  core.String filename;
+
+  /**
+   * List of headers on this message part. For the top-level message part,
+   * representing the entire message payload, it will contain the standard RFC
+   * 2822 email headers such as To, From, and Subject.
+   */
+  core.List<MessagePartHeader> headers;
+
+  /** The MIME type of the message part. */
+  core.String mimeType;
+
+  /** The immutable ID of the message part. */
+  core.String partId;
+
+  /**
+   * The child MIME message parts of this part. This only applies to container
+   * MIME message parts, for example multipart / * . For non- container MIME
+   * message part types, such as text/plain, this field is empty. For more
+   * information, see RFC 1521.
+   */
+  core.List<MessagePart> parts;
+
+
+  MessagePart();
+
+  MessagePart.fromJson(core.Map _json) {
+    if (_json.containsKey("body")) {
+      body = new MessagePartBody.fromJson(_json["body"]);
+    }
+    if (_json.containsKey("filename")) {
+      filename = _json["filename"];
+    }
+    if (_json.containsKey("headers")) {
+      headers = _json["headers"].map((value) => new MessagePartHeader.fromJson(value)).toList();
+    }
+    if (_json.containsKey("mimeType")) {
+      mimeType = _json["mimeType"];
+    }
+    if (_json.containsKey("partId")) {
+      partId = _json["partId"];
+    }
+    if (_json.containsKey("parts")) {
+      parts = _json["parts"].map((value) => new MessagePart.fromJson(value)).toList();
+    }
+  }
+
+  core.Map toJson() {
+    var _json = new core.Map();
+    if (body != null) {
+      _json["body"] = (body).toJson();
+    }
+    if (filename != null) {
+      _json["filename"] = filename;
+    }
+    if (headers != null) {
+      _json["headers"] = headers.map((value) => (value).toJson()).toList();
+    }
+    if (mimeType != null) {
+      _json["mimeType"] = mimeType;
+    }
+    if (partId != null) {
+      _json["partId"] = partId;
+    }
+    if (parts != null) {
+      _json["parts"] = parts.map((value) => (value).toJson()).toList();
+    }
+    return _json;
+  }
+}
+
+
+/** The body of a single MIME message part. */
+class MessagePartBody {
+  /**
+   * When present, contains the ID of an external attachment that can be
+   * retrieved in a separate messages.attachments.get request. When not present,
+   * the entire content of the message part body is contained in the data field.
+   */
+  core.String attachmentId;
+
+  /**
+   * The body data of a MIME message part. May be empty for MIME container types
+   * that have no message body or when the body data is sent as a separate
+   * attachment. An attachment ID is present if the body data is contained in a
+   * separate attachment.
+   */
+  core.String data;
+
+  core.List<core.int> get dataAsBytes {
+    return crypto.CryptoUtils.base64StringToBytes(data);
+  }
+
+  void set dataAsBytes(core.List<core.int> _bytes) {
+    data = crypto.CryptoUtils.bytesToBase64(_bytes, urlSafe: true);
+  }
+
+  /** Total number of bytes in the body of the message part. */
+  core.int size;
+
+
+  MessagePartBody();
+
+  MessagePartBody.fromJson(core.Map _json) {
+    if (_json.containsKey("attachmentId")) {
+      attachmentId = _json["attachmentId"];
+    }
+    if (_json.containsKey("data")) {
+      data = _json["data"];
+    }
+    if (_json.containsKey("size")) {
+      size = _json["size"];
+    }
+  }
+
+  core.Map toJson() {
+    var _json = new core.Map();
+    if (attachmentId != null) {
+      _json["attachmentId"] = attachmentId;
+    }
+    if (data != null) {
+      _json["data"] = data;
+    }
+    if (size != null) {
+      _json["size"] = size;
+    }
+    return _json;
+  }
+}
+
+
+/** Not documented yet. */
+class MessagePartHeader {
+  /** The name of the header before the : separator. For example, To. */
+  core.String name;
+
+  /**
+   * The value of the header after the : separator. For example,
+   * someuser@example.com.
+   */
+  core.String value;
+
+
+  MessagePartHeader();
+
+  MessagePartHeader.fromJson(core.Map _json) {
+    if (_json.containsKey("name")) {
+      name = _json["name"];
+    }
+    if (_json.containsKey("value")) {
+      value = _json["value"];
+    }
+  }
+
+  core.Map toJson() {
+    var _json = new core.Map();
+    if (name != null) {
+      _json["name"] = name;
+    }
+    if (value != null) {
+      _json["value"] = value;
+    }
+    return _json;
+  }
+}
+
+
+/** Not documented yet. */
+class ModifyMessageRequest {
+  /** A list of IDs of labels to add to this message. */
+  core.List<core.String> addLabelIds;
+
+  /** A list IDs of labels to remove from this message. */
+  core.List<core.String> removeLabelIds;
+
+
+  ModifyMessageRequest();
+
+  ModifyMessageRequest.fromJson(core.Map _json) {
+    if (_json.containsKey("addLabelIds")) {
+      addLabelIds = _json["addLabelIds"];
+    }
+    if (_json.containsKey("removeLabelIds")) {
+      removeLabelIds = _json["removeLabelIds"];
+    }
+  }
+
+  core.Map toJson() {
+    var _json = new core.Map();
+    if (addLabelIds != null) {
+      _json["addLabelIds"] = addLabelIds;
+    }
+    if (removeLabelIds != null) {
+      _json["removeLabelIds"] = removeLabelIds;
+    }
+    return _json;
+  }
+}
+
+
+/** Not documented yet. */
+class ModifyThreadRequest {
+  /** A list of IDs of labels to add to this thread. */
+  core.List<core.String> addLabelIds;
+
+  /** A list of IDs of labels to remove from this thread. */
+  core.List<core.String> removeLabelIds;
+
+
+  ModifyThreadRequest();
+
+  ModifyThreadRequest.fromJson(core.Map _json) {
+    if (_json.containsKey("addLabelIds")) {
+      addLabelIds = _json["addLabelIds"];
+    }
+    if (_json.containsKey("removeLabelIds")) {
+      removeLabelIds = _json["removeLabelIds"];
+    }
+  }
+
+  core.Map toJson() {
+    var _json = new core.Map();
+    if (addLabelIds != null) {
+      _json["addLabelIds"] = addLabelIds;
+    }
+    if (removeLabelIds != null) {
+      _json["removeLabelIds"] = removeLabelIds;
+    }
+    return _json;
+  }
+}
+
+
+/** A collection of messages representing a conversation. */
+class Thread {
+  /** The ID of the last history record that modified this thread. */
+  core.String historyId;
+
+  /** The unique ID of the thread. */
+  core.String id;
+
+  /** The list of messages in the thread. */
+  core.List<Message> messages;
+
+  /** A short part of the message text. */
+  core.String snippet;
+
+
+  Thread();
+
+  Thread.fromJson(core.Map _json) {
+    if (_json.containsKey("historyId")) {
+      historyId = _json["historyId"];
+    }
+    if (_json.containsKey("id")) {
+      id = _json["id"];
+    }
+    if (_json.containsKey("messages")) {
+      messages = _json["messages"].map((value) => new Message.fromJson(value)).toList();
+    }
+    if (_json.containsKey("snippet")) {
+      snippet = _json["snippet"];
+    }
+  }
+
+  core.Map toJson() {
+    var _json = new core.Map();
+    if (historyId != null) {
+      _json["historyId"] = historyId;
+    }
+    if (id != null) {
+      _json["id"] = id;
+    }
+    if (messages != null) {
+      _json["messages"] = messages.map((value) => (value).toJson()).toList();
+    }
+    if (snippet != null) {
+      _json["snippet"] = snippet;
+    }
+    return _json;
+  }
+}
+
+