Fix for indexing synthetic elements.

pkg/analysis_server/lib/src/services/search/search_engine_internal2.dart

Index: pkg/analysis_server/lib/src/services/search/search_engine_internal2.dart
diff --git a/pkg/analysis_server/lib/src/services/search/search_engine_internal2.dart b/pkg/analysis_server/lib/src/services/search/search_engine_internal2.dart
index 81cac320144ab161fd22bbe0724ba03f8a639ff7..953f6c34f229f0bfe51cd4ba26b3a3af7745478b 100644
--- a/pkg/analysis_server/lib/src/services/search/search_engine_internal2.dart
+++ b/pkg/analysis_server/lib/src/services/search/search_engine_internal2.dart
@@ -54,9 +54,10 @@ class SearchEngineImpl2 implements SearchEngine {
         kind == ElementKind.COMPILATION_UNIT ||
         kind == ElementKind.CONSTRUCTOR ||
         kind == ElementKind.FUNCTION_TYPE_ALIAS ||
-        kind == ElementKind.GETTER ||
         kind == ElementKind.SETTER) {
       return _searchReferences(element);
+    } else if (kind == ElementKind.GETTER) {
+      return _searchReferences_Getter(element);
     } else if (kind == ElementKind.FIELD ||
         kind == ElementKind.TOP_LEVEL_VARIABLE) {
       return _searchReferences_Field(element);
@@ -170,6 +171,16 @@ class SearchEngineImpl2 implements SearchEngine {
     return matches;
   }
 
+  Future<List<SearchMatch>> _searchReferences_Getter(
+      PropertyAccessorElement getter) async {
+    List<SearchMatch> matches = <SearchMatch>[];
+    await _addMatches(matches, getter, IndexRelationKind.IS_REFERENCED_BY,
+        MatchKind.REFERENCE);
+    await _addMatches(
+        matches, getter, IndexRelationKind.IS_INVOKED_BY, MatchKind.INVOCATION);
+    return matches;
+  }
+
   Future<List<SearchMatch>> _searchReferences_Import(
       ImportElement element) async {
     List<SearchMatch> matches = <SearchMatch>[];