Fix more uses of generic method comments and increment the data version (TBR)

pkg/analyzer_plugin/test/utilities/completion/completion_contributor_util.dart

Index: pkg/analyzer_plugin/test/utilities/completion/completion_contributor_util.dart
diff --git a/pkg/analyzer_plugin/test/utilities/completion/completion_contributor_util.dart b/pkg/analyzer_plugin/test/utilities/completion/completion_contributor_util.dart
index 408587fd38a00cc31464fa38614fb14f1d52856f..23f1fba782ea7b929b095f10bbf74cad37e5506c 100644
--- a/pkg/analyzer_plugin/test/utilities/completion/completion_contributor_util.dart
+++ b/pkg/analyzer_plugin/test/utilities/completion/completion_contributor_util.dart
@@ -542,8 +542,7 @@ abstract class DartCompletionContributorTest extends AbstractContextTest {
     return cs;
   }
 
-  Future/*<E>*/ performAnalysis/*<E>*/(
-      int times, Completer/*<E>*/ completer) async {
+  Future<E> performAnalysis<E>(int times, Completer<E> completer) async {
     if (completer.isCompleted) {
       return completer.future;
     }