Use a more precise type for "object" in analysis server API.

pkg/analysis_server/lib/src/generated_protocol.dart

Index: pkg/analysis_server/lib/src/generated_protocol.dart
diff --git a/pkg/analysis_server/lib/src/generated_protocol.dart b/pkg/analysis_server/lib/src/generated_protocol.dart
index e123f43e3b3a227deb4b6ae6239bbc2bba83818a..35ccc6b4df307b7ae3b9bd56cb87908d59e0fee9 100644
--- a/pkg/analysis_server/lib/src/generated_protocol.dart
+++ b/pkg/analysis_server/lib/src/generated_protocol.dart
@@ -36,7 +36,7 @@ class ServerGetVersionParams {
  *   "version": String
  * }
  */
-class ServerGetVersionResult {
+class ServerGetVersionResult implements HasToJson {
   /**
    * The version number of the analysis server.
    */
@@ -144,7 +144,7 @@ class ServerShutdownResult {
  *   "subscriptions": List<ServerService>
  * }
  */
-class ServerSetSubscriptionsParams {
+class ServerSetSubscriptionsParams implements HasToJson {
   /**
    * A list of the services being subscribed to.
    */
@@ -254,7 +254,7 @@ class ServerConnectedParams {
  *   "stackTrace": String
  * }
  */
-class ServerErrorParams {
+class ServerErrorParams implements HasToJson {
   /**
    * True if the error is a fatal error, meaning that the server will shutdown
    * automatically after sending this notification.
@@ -350,7 +350,7 @@ class ServerErrorParams {
  *   "analysis": optional AnalysisStatus
  * }
  */
-class ServerStatusParams {
+class ServerStatusParams implements HasToJson {
   /**
    * The current status of analysis, including whether analysis is being
    * performed and if so what is being analyzed.
@@ -417,7 +417,7 @@ class ServerStatusParams {
  *   "file": FilePath
  * }
  */
-class AnalysisGetErrorsParams {
+class AnalysisGetErrorsParams implements HasToJson {
   /**
    * The file for which errors are being requested.
    */
@@ -483,7 +483,7 @@ class AnalysisGetErrorsParams {
  *   "errors": List<AnalysisError>
  * }
  */
-class AnalysisGetErrorsResult {
+class AnalysisGetErrorsResult implements HasToJson {
   /**
    * The errors associated with the file.
    */
@@ -550,7 +550,7 @@ class AnalysisGetErrorsResult {
  *   "offset": int
  * }
  */
-class AnalysisGetHoverParams {
+class AnalysisGetHoverParams implements HasToJson {
   /**
    * The file in which hover information is being requested.
    */
@@ -630,7 +630,7 @@ class AnalysisGetHoverParams {
  *   "hovers": List<HoverInformation>
  * }
  */
-class AnalysisGetHoverResult {
+class AnalysisGetHoverResult implements HasToJson {
   /**
    * The hover information associated with the location. The list will be empty
    * if no information could be determined for the location. The list can
@@ -743,7 +743,7 @@ class AnalysisReanalyzeResult {
  *   "excluded": List<FilePath>
  * }
  */
-class AnalysisSetAnalysisRootsParams {
+class AnalysisSetAnalysisRootsParams implements HasToJson {
   /**
    * A list of the files and directories that should be analyzed.
    */
@@ -845,7 +845,7 @@ class AnalysisSetAnalysisRootsResult {
  *   "files": List<FilePath>
  * }
  */
-class AnalysisSetPriorityFilesParams {
+class AnalysisSetPriorityFilesParams implements HasToJson {
   /**
    * The files that are to be a priority for analysis.
    */
@@ -932,7 +932,7 @@ class AnalysisSetPriorityFilesResult {
  *   "subscriptions": Map<AnalysisService, List<FilePath>>
  * }
  */
-class AnalysisSetSubscriptionsParams {
+class AnalysisSetSubscriptionsParams implements HasToJson {
   /**
    * A table mapping services to a list of the files being subscribed to the
    * service.
@@ -1020,7 +1020,7 @@ class AnalysisSetSubscriptionsResult {
  *   "files": Map<FilePath, AddContentOverlay | ChangeContentOverlay | RemoveContentOverlay>
  * }
  */
-class AnalysisUpdateContentParams {
+class AnalysisUpdateContentParams implements HasToJson {
   /**
    * A table mapping the files whose content has changed to a description of
    * the content change.
@@ -1108,7 +1108,7 @@ class AnalysisUpdateContentResult {
  *   "options": AnalysisOptions
  * }
  */
-class AnalysisUpdateOptionsParams {
+class AnalysisUpdateOptionsParams implements HasToJson {
   /**
    * The options that are to be used to control analysis.
    */
@@ -1196,7 +1196,7 @@ class AnalysisUpdateOptionsResult {
  *   "errors": List<AnalysisError>
  * }
  */
-class AnalysisErrorsParams {
+class AnalysisErrorsParams implements HasToJson {
   /**
    * The file containing the errors.
    */
@@ -1276,7 +1276,7 @@ class AnalysisErrorsParams {
  *   "files": List<FilePath>
  * }
  */
-class AnalysisFlushResultsParams {
+class AnalysisFlushResultsParams implements HasToJson {
   /**
    * The files that are no longer being analyzed.
    */
@@ -1343,7 +1343,7 @@ class AnalysisFlushResultsParams {
  *   "regions": List<FoldingRegion>
  * }
  */
-class AnalysisFoldingParams {
+class AnalysisFoldingParams implements HasToJson {
   /**
    * The file containing the folding regions.
    */
@@ -1424,7 +1424,7 @@ class AnalysisFoldingParams {
  *   "regions": List<HighlightRegion>
  * }
  */
-class AnalysisHighlightsParams {
+class AnalysisHighlightsParams implements HasToJson {
   /**
    * The file containing the highlight regions.
    */
@@ -1509,7 +1509,7 @@ class AnalysisHighlightsParams {
  *   "regions": List<NavigationRegion>
  * }
  */
-class AnalysisNavigationParams {
+class AnalysisNavigationParams implements HasToJson {
   /**
    * The file containing the navigation regions.
    */
@@ -1595,7 +1595,7 @@ class AnalysisNavigationParams {
  *   "occurrences": List<Occurrences>
  * }
  */
-class AnalysisOccurrencesParams {
+class AnalysisOccurrencesParams implements HasToJson {
   /**
    * The file in which the references occur.
    */
@@ -1676,7 +1676,7 @@ class AnalysisOccurrencesParams {
  *   "outline": Outline
  * }
  */
-class AnalysisOutlineParams {
+class AnalysisOutlineParams implements HasToJson {
   /**
    * The file with which the outline is associated.
    */
@@ -1757,7 +1757,7 @@ class AnalysisOutlineParams {
  *   "overrides": List<Override>
  * }
  */
-class AnalysisOverridesParams {
+class AnalysisOverridesParams implements HasToJson {
   /**
    * The file with which the overrides are associated.
    */
@@ -1838,7 +1838,7 @@ class AnalysisOverridesParams {
  *   "offset": int
  * }
  */
-class CompletionGetSuggestionsParams {
+class CompletionGetSuggestionsParams implements HasToJson {
   /**
    * The file containing the point at which suggestions are to be made.
    */
@@ -1918,7 +1918,7 @@ class CompletionGetSuggestionsParams {
  *   "id": CompletionId
  * }
  */
-class CompletionGetSuggestionsResult {
+class CompletionGetSuggestionsResult implements HasToJson {
   /**
    * The identifier used to associate results with this completion request.
    */
@@ -1988,7 +1988,7 @@ class CompletionGetSuggestionsResult {
  *   "isLast": bool
  * }
  */
-class CompletionResultsParams {
+class CompletionResultsParams implements HasToJson {
   /**
    * The id associated with the completion.
    */
@@ -2122,7 +2122,7 @@ class CompletionResultsParams {
  *   "includePotential": bool
  * }
  */
-class SearchFindElementReferencesParams {
+class SearchFindElementReferencesParams implements HasToJson {
   /**
    * The file containing the declaration of or reference to the element used to
    * define the search.
@@ -2219,7 +2219,7 @@ class SearchFindElementReferencesParams {
  *   "element": optional Element
  * }
  */
-class SearchFindElementReferencesResult {
+class SearchFindElementReferencesResult implements HasToJson {
   /**
    * The identifier used to associate results with this search request.
    */
@@ -2302,7 +2302,7 @@ class SearchFindElementReferencesResult {
  *   "name": String
  * }
  */
-class SearchFindMemberDeclarationsParams {
+class SearchFindMemberDeclarationsParams implements HasToJson {
   /**
    * The name of the declarations to be found.
    */
@@ -2368,7 +2368,7 @@ class SearchFindMemberDeclarationsParams {
  *   "id": SearchId
  * }
  */
-class SearchFindMemberDeclarationsResult {
+class SearchFindMemberDeclarationsResult implements HasToJson {
   /**
    * The identifier used to associate results with this search request.
    */
@@ -2434,7 +2434,7 @@ class SearchFindMemberDeclarationsResult {
  *   "name": String
  * }
  */
-class SearchFindMemberReferencesParams {
+class SearchFindMemberReferencesParams implements HasToJson {
   /**
    * The name of the references to be found.
    */
@@ -2500,7 +2500,7 @@ class SearchFindMemberReferencesParams {
  *   "id": SearchId
  * }
  */
-class SearchFindMemberReferencesResult {
+class SearchFindMemberReferencesResult implements HasToJson {
   /**
    * The identifier used to associate results with this search request.
    */
@@ -2566,7 +2566,7 @@ class SearchFindMemberReferencesResult {
  *   "pattern": String
  * }
  */
-class SearchFindTopLevelDeclarationsParams {
+class SearchFindTopLevelDeclarationsParams implements HasToJson {
   /**
    * The regular expression used to match the names of the declarations to be
    * found.
@@ -2633,7 +2633,7 @@ class SearchFindTopLevelDeclarationsParams {
  *   "id": SearchId
  * }
  */
-class SearchFindTopLevelDeclarationsResult {
+class SearchFindTopLevelDeclarationsResult implements HasToJson {
   /**
    * The identifier used to associate results with this search request.
    */
@@ -2700,7 +2700,7 @@ class SearchFindTopLevelDeclarationsResult {
  *   "offset": int
  * }
  */
-class SearchGetTypeHierarchyParams {
+class SearchGetTypeHierarchyParams implements HasToJson {
   /**
    * The file containing the declaration or reference to the type for which a
    * hierarchy is being requested.
@@ -2781,7 +2781,7 @@ class SearchGetTypeHierarchyParams {
  *   "hierarchyItems": optional List<TypeHierarchyItem>
  * }
  */
-class SearchGetTypeHierarchyResult {
+class SearchGetTypeHierarchyResult implements HasToJson {
   /**
    * A list of the types in the requested hierarchy. The first element of the
    * list is the item representing the type for which the hierarchy was
@@ -2863,7 +2863,7 @@ class SearchGetTypeHierarchyResult {
  *   "isLast": bool
  * }
  */
-class SearchResultsParams {
+class SearchResultsParams implements HasToJson {
   /**
    * The id associated with the search.
    */
@@ -2960,7 +2960,7 @@ class SearchResultsParams {
  *   "length": int
  * }
  */
-class EditGetAssistsParams {
+class EditGetAssistsParams implements HasToJson {
   /**
    * The file containing the code for which assists are being requested.
    */
@@ -3054,7 +3054,7 @@ class EditGetAssistsParams {
  *   "assists": List<SourceChange>
  * }
  */
-class EditGetAssistsResult {
+class EditGetAssistsResult implements HasToJson {
   /**
    * The assists that are available at the given location.
    */
@@ -3122,7 +3122,7 @@ class EditGetAssistsResult {
  *   "length": int
  * }
  */
-class EditGetAvailableRefactoringsParams {
+class EditGetAvailableRefactoringsParams implements HasToJson {
   /**
    * The file containing the code on which the refactoring would be based.
    */
@@ -3216,7 +3216,7 @@ class EditGetAvailableRefactoringsParams {
  *   "kinds": List<RefactoringKind>
  * }
  */
-class EditGetAvailableRefactoringsResult {
+class EditGetAvailableRefactoringsResult implements HasToJson {
   /**
    * The kinds of refactorings that are valid for the given selection.
    */
@@ -3283,7 +3283,7 @@ class EditGetAvailableRefactoringsResult {
  *   "offset": int
  * }
  */
-class EditGetFixesParams {
+class EditGetFixesParams implements HasToJson {
   /**
    * The file containing the errors for which fixes are being requested.
    */
@@ -3363,7 +3363,7 @@ class EditGetFixesParams {
  *   "fixes": List<ErrorFixes>
  * }
  */
-class EditGetFixesResult {
+class EditGetFixesResult implements HasToJson {
   /**
    * The fixes that are available for each of the analysis errors. There is a
    * one-to-one correspondence between the analysis errors in the request and
@@ -3439,7 +3439,7 @@ class EditGetFixesResult {
  *   "options": optional object
  * }
  */
-class EditGetRefactoringParams {
+class EditGetRefactoringParams implements HasToJson {
   /**
    * The kind of refactoring to be performed.
    */
@@ -3473,7 +3473,7 @@ class EditGetRefactoringParams {
    * as “Options”. This field can be omitted if the refactoring does not
    * require any options or if the values of those options are not known.
    */
-  Object options;
+  Map options;
 
   EditGetRefactoringParams(this.kind, this.file, this.offset, this.length, this.validateOnly, {this.options});
 
@@ -3512,7 +3512,7 @@ class EditGetRefactoringParams {
       } else {
         throw jsonDecoder.missingKey(jsonPath, "validateOnly");
       }
-      Object options;
+      Map options;
       if (json.containsKey("options")) {
         options = json["options"];
       }
@@ -3583,7 +3583,7 @@ class EditGetRefactoringParams {
  *   "potentialEdits": optional List<String>
  * }
  */
-class EditGetRefactoringResult {
+class EditGetRefactoringResult implements HasToJson {
   /**
    * The status of the refactoring. The array will be empty if there are no
    * known problems.
@@ -3596,7 +3596,7 @@ class EditGetRefactoringResult {
    * returned is documented in the section titled Refactorings, labeled as
    * “Feedback”.
    */
-  Object feedback;
+  Map feedback;
 
   /**
    * The changes that are to be applied to affect the refactoring. This field
@@ -3633,7 +3633,7 @@ class EditGetRefactoringResult {
       } else {
         throw jsonDecoder.missingKey(jsonPath, "problems");
       }
-      Object feedback;
+      Map feedback;
       if (json.containsKey("feedback")) {
         feedback = json["feedback"];
       }
@@ -3709,7 +3709,7 @@ class EditGetRefactoringResult {
  *   "contextRoot": FilePath
  * }
  */
-class DebugCreateContextParams {
+class DebugCreateContextParams implements HasToJson {
   /**
    * The path of the Dart or HTML file that will be launched.
    */
@@ -3775,7 +3775,7 @@ class DebugCreateContextParams {
  *   "id": DebugContextId
  * }
  */
-class DebugCreateContextResult {
+class DebugCreateContextResult implements HasToJson {
   /**
    * The identifier used to refer to the debugging context that was created.
    */
@@ -3841,7 +3841,7 @@ class DebugCreateContextResult {
  *   "id": DebugContextId
  * }
  */
-class DebugDeleteContextParams {
+class DebugDeleteContextParams implements HasToJson {
   /**
    * The identifier of the debugging context that is to be deleted.
    */
@@ -3930,7 +3930,7 @@ class DebugDeleteContextResult {
  *   "uri": optional String
  * }
  */
-class DebugMapUriParams {
+class DebugMapUriParams implements HasToJson {
   /**
    * The identifier of the debugging context in which the URI is to be mapped.
    */
@@ -4025,7 +4025,7 @@ class DebugMapUriParams {
  *   "uri": optional String
  * }
  */
-class DebugMapUriResult {
+class DebugMapUriResult implements HasToJson {
   /**
    * The file to which the URI was mapped. This field is omitted if the uri
    * field was not given in the request.
@@ -4107,7 +4107,7 @@ class DebugMapUriResult {
  *   "subscriptions": List<DebugService>
  * }
  */
-class DebugSetSubscriptionsParams {
+class DebugSetSubscriptionsParams implements HasToJson {
   /**
    * A list of the services being subscribed to.
    */
@@ -4196,7 +4196,7 @@ class DebugSetSubscriptionsResult {
  *   "htmlToDart": Map<FilePath, List<FilePath>>
  * }
  */
-class DebugLaunchDataParams {
+class DebugLaunchDataParams implements HasToJson {
   /**
    * A list of the files that are executable in the given context. This list
    * replaces any previous list provided for the given context.
@@ -4294,7 +4294,7 @@ class DebugLaunchDataParams {
  *   "content": String
  * }
  */
-class AddContentOverlay {
+class AddContentOverlay implements HasToJson {
   /**
    * The new content of the file.
    */
@@ -4360,7 +4360,7 @@ class AddContentOverlay {
  *   "correction": optional String
  * }
  */
-class AnalysisError {
+class AnalysisError implements HasToJson {
   /**
    * Returns a list of AnalysisErrors correponding to the given list of Engine
    * errors.
@@ -4493,7 +4493,7 @@ class AnalysisError {
  *   "generateHints": optional bool
  * }
  */
-class AnalysisOptions {
+class AnalysisOptions implements HasToJson {
   /**
    * True if the client wants to enable support for the proposed async feature.
    */
@@ -4674,7 +4674,7 @@ class AnalysisService {
  *   "analysisTarget": optional String
  * }
  */
-class AnalysisStatus {
+class AnalysisStatus implements HasToJson {
   /**
    * True if analysis is currently being performed.
    */
@@ -4747,7 +4747,7 @@ class AnalysisStatus {
  *   "edits": List<SourceEdit>
  * }
  */
-class ChangeContentOverlay {
+class ChangeContentOverlay implements HasToJson {
   /**
    * The edits to be applied to the file.
    */
@@ -4874,7 +4874,7 @@ class CompletionRelevance {
  *   "parameterType": optional String
  * }
  */
-class CompletionSuggestion {
+class CompletionSuggestion implements HasToJson {
   /**
    * The kind of element being suggested.
    */
@@ -5369,7 +5369,7 @@ class DebugService {
  *   "returnType": optional String
  * }
  */
-class Element {
+class Element implements HasToJson {
   static const int FLAG_ABSTRACT = 0x01;
   static const int FLAG_CONST = 0x02;
   static const int FLAG_FINAL = 0x04;
@@ -5672,7 +5672,7 @@ class ElementKind {
  *   "data": optional object
  * }
  */
-class Error {
+class Error implements HasToJson {
   /**
    * A code that uniquely identifies the error that occurred.
    */
@@ -5687,7 +5687,7 @@ class Error {
    * Additional data related to the error. This field is omitted if there is no
    * additional data available.
    */
-  Object data;
+  Map data;
 
   Error(this.code, this.message, {this.data});
 
@@ -5708,7 +5708,7 @@ class Error {
       } else {
         throw jsonDecoder.missingKey(jsonPath, "message");
       }
-      Object data;
+      Map data;
       if (json.containsKey("data")) {
         data = json["data"];
       }
@@ -5759,7 +5759,7 @@ class Error {
  *   "fixes": List<SourceChange>
  * }
  */
-class ErrorFixes {
+class ErrorFixes implements HasToJson {
   /**
    * The error with which the fixes are associated.
    */
@@ -5955,7 +5955,7 @@ class ErrorType {
  *   "offset": ExecutableKind
  * }
  */
-class ExecutableFile {
+class ExecutableFile implements HasToJson {
   /**
    * The path of the executable file.
    */
@@ -6136,7 +6136,7 @@ class FoldingKind {
  *   "length": int
  * }
  */
-class FoldingRegion {
+class FoldingRegion implements HasToJson {
   /**
    * The kind of the region.
    */
@@ -6223,7 +6223,7 @@ class FoldingRegion {
  *   "length": int
  * }
  */
-class HighlightRegion {
+class HighlightRegion implements HasToJson {
   /**
    * The type of highlight associated with the region.
    */
@@ -6526,7 +6526,7 @@ class HighlightRegionType {
  *   "staticType": optional String
  * }
  */
-class HoverInformation {
+class HoverInformation implements HasToJson {
   /**
    * The offset of the range of characters that encompases the cursor position
    * and has the same hover information as the cursor position.
@@ -6727,7 +6727,7 @@ class HoverInformation {
  *   "suggestions": List<LinkedEditSuggestion>
  * }
  */
-class LinkedEditGroup {
+class LinkedEditGroup implements HasToJson {
   /**
    * The positions of the regions that should be edited simultaneously.
    */
@@ -6834,7 +6834,7 @@ class LinkedEditGroup {
  *   "kind": LinkedEditSuggestionKind
  * }
  */
-class LinkedEditSuggestion {
+class LinkedEditSuggestion implements HasToJson {
   /**
    * The value that could be used to replace all of the linked edit regions.
    */
@@ -6963,7 +6963,7 @@ class LinkedEditSuggestionKind {
  *   "startColumn": int
  * }
  */
-class Location {
+class Location implements HasToJson {
   /**
    * The file containing the range.
    */
@@ -7104,7 +7104,7 @@ class Location {
  *   "targets": List<Element>
  * }
  */
-class NavigationRegion {
+class NavigationRegion implements HasToJson {
   /**
    * The offset of the region from which the user can navigate.
    */
@@ -7192,7 +7192,7 @@ class NavigationRegion {
  *   "length": int
  * }
  */
-class Occurrences {
+class Occurrences implements HasToJson {
   /**
    * The element that was referenced.
    */
@@ -7280,7 +7280,7 @@ class Occurrences {
  *   "children": optional List<Outline>
  * }
  */
-class Outline {
+class Outline implements HasToJson {
   /**
    * A description of the element represented by this node.
    */
@@ -7392,7 +7392,7 @@ class Outline {
  *   "interfaceMembers": optional List<OverriddenMember>
  * }
  */
-class Override {
+class Override implements HasToJson {
   /**
    * The offset of the name of the overriding member.
    */
@@ -7502,7 +7502,7 @@ class Override {
  *   "className": String
  * }
  */
-class OverriddenMember {
+class OverriddenMember implements HasToJson {
   /**
    * The element that is being overridden.
    */
@@ -7580,7 +7580,7 @@ class OverriddenMember {
  *   "offset": int
  * }
  */
-class Position {
+class Position implements HasToJson {
   /**
    * The file containing the position.
    */
@@ -7724,7 +7724,7 @@ class RefactoringKind {
  *   "parameters": optional String
  * }
  */
-class RefactoringMethodParameter {
+class RefactoringMethodParameter implements HasToJson {
   /**
    * The unique identifier of the parameter. Clients may omit this field for
    * the parameters they want to add.
@@ -7892,7 +7892,7 @@ class RefactoringMethodParameterKind {
  *   "location": optional Location
  * }
  */
-class RefactoringProblem {
+class RefactoringProblem implements HasToJson {
   /**
    * The severity of the problem being represented.
    */
@@ -8039,7 +8039,7 @@ class RefactoringProblemSeverity {
  *   "type": "remove"
  * }
  */
-class RemoveContentOverlay {
+class RemoveContentOverlay implements HasToJson {
   RemoveContentOverlay();
 
   factory RemoveContentOverlay.fromJson(JsonDecoder jsonDecoder, String jsonPath, Object json) {
@@ -8186,7 +8186,7 @@ class RequestErrorCode {
  *   "path": List<Element>
  * }
  */
-class SearchResult {
+class SearchResult implements HasToJson {
   /**
    * The location of the code that matched the search criteria.
    */
@@ -8435,7 +8435,7 @@ class ServerService {
  *   "selection": optional Position
  * }
  */
-class SourceChange {
+class SourceChange implements HasToJson {
   /**
    * A human-readable description of the change to be applied.
    */
@@ -8571,7 +8571,7 @@ class SourceChange {
  *   "id": optional String
  * }
  */
-class SourceEdit {
+class SourceEdit implements HasToJson {
   /**
    * Get the result of applying a set of [edits] to the given [code]. Edits are
    * applied in the order they appear in [edits].
@@ -8701,7 +8701,7 @@ class SourceEdit {
  *   "edits": List<SourceEdit>
  * }
  */
-class SourceFileEdit {
+class SourceFileEdit implements HasToJson {
   /**
    * The file containing the code to be modified.
    */
@@ -8793,7 +8793,7 @@ class SourceFileEdit {
  *   "subclasses": List<int>
  * }
  */
-class TypeHierarchyItem {
+class TypeHierarchyItem implements HasToJson {
   /**
    * The class element represented by this item.
    */
@@ -9025,7 +9025,7 @@ class ConvertMethodToGetterOptions {
  *   "lengths": List<int>
  * }
  */
-class ExtractLocalVariableFeedback {
+class ExtractLocalVariableFeedback implements HasToJson {
   /**
    * The proposed names for the local variable.
    */
@@ -9120,7 +9120,7 @@ class ExtractLocalVariableFeedback {
  *   "extractAll": bool
  * }
  */
-class ExtractLocalVariableOptions {
+class ExtractLocalVariableOptions implements HasToJson {
   /**
    * The name that the local variable should be given.
    */
@@ -9207,7 +9207,7 @@ class ExtractLocalVariableOptions {
  *   "lengths": List<int>
  * }
  */
-class ExtractMethodFeedback {
+class ExtractMethodFeedback implements HasToJson {
   /**
    * The offset to the beginning of the expression or statements that will be
    * extracted.
@@ -9391,7 +9391,7 @@ class ExtractMethodFeedback {
  *   "extractAll": bool
  * }
  */
-class ExtractMethodOptions {
+class ExtractMethodOptions implements HasToJson {
   /**
    * The return type that should be defined for the method.
    */
@@ -9573,7 +9573,7 @@ class InlineMethodFeedback {
  *   "inlineAll": bool
  * }
  */
-class InlineMethodOptions {
+class InlineMethodOptions implements HasToJson {
   /**
    * True if the method being inlined should be removed. It is an error if this
    * field is true and inlineAll is false.
@@ -9652,7 +9652,7 @@ class InlineMethodOptions {
  *   "length": int
  * }
  */
-class RenameFeedback {
+class RenameFeedback implements HasToJson {
   /**
    * The offset to the beginning of the name selected to be renamed.
    */
@@ -9728,7 +9728,7 @@ class RenameFeedback {
  *   "newName": String
  * }
  */
-class RenameOptions {
+class RenameOptions implements HasToJson {
   /**
    * The name that the element should have after the refactoring.
    */