Analysis request `getReachableSources` (#24893).

pkg/analysis_server/test/integration/protocol_matchers.dart

 // Copyright (c) 2014, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 //
 // This file has been automatically generated.  Please do not edit it manually.
 // To regenerate the file, use the script
 // "pkg/analysis_server/tool/spec/generate_files".
 
 /**
  * Matchers for data types defined in the analysis server API
@@ skipping 135 matching lines @@
  * {
  *   "hovers": List<HoverInformation>
  * }
  */
 final Matcher isAnalysisGetHoverResult = new LazyMatcher(() => new MatchesJsonObject(
   "analysis.getHover result", {
     "hovers": isListOf(isHoverInformation)
   }));
 
 /**
+ * analysis.getReachableSources params
+ *
+ * {
+ *   "file": FilePath
+ * }
+ */
+final Matcher isAnalysisGetReachableSourcesParams = new LazyMatcher(() => new MatchesJsonObject(
+  "analysis.getReachableSources params", {
+    "file": isFilePath
+  }));
+
+/**
+ * analysis.getReachableSources result
+ *
+ * {
+ *   "sources": Map<String, List<String>>
+ * }
+ */
+final Matcher isAnalysisGetReachableSourcesResult = new LazyMatcher(() => new MatchesJsonObject(
+  "analysis.getReachableSources result", {
+    "sources": isMapOf(isString, isListOf(isString))
+  }));
+
+/**
  * analysis.getLibraryDependencies params
  */
 final Matcher isAnalysisGetLibraryDependenciesParams = isNull;
 
 /**
  * analysis.getLibraryDependencies result
  *
  * {
  *   "libraries": List<FilePath>
  *   "packageMap": Map<String, Map<String, List<FilePath>>>
@@ skipping 2283 matching lines @@
  *
  * {
  *   "newName": String
  * }
  */
 final Matcher isRenameOptions = new LazyMatcher(() => new MatchesJsonObject(
   "rename options", {
     "newName": isString
   }));