Support a short-hand way to create linked edit groups

pkg/analyzer_plugin/lib/src/utilities/change_builder/change_builder_core.dart

Index: pkg/analyzer_plugin/lib/src/utilities/change_builder/change_builder_core.dart
diff --git a/pkg/analyzer_plugin/lib/src/utilities/change_builder/change_builder_core.dart b/pkg/analyzer_plugin/lib/src/utilities/change_builder/change_builder_core.dart
index f737d028ba0878bb35162d06c6337fad93844a6d..904a7671c44a22778a9207f291fd7eca3ffea747 100644
--- a/pkg/analyzer_plugin/lib/src/utilities/change_builder/change_builder_core.dart
+++ b/pkg/analyzer_plugin/lib/src/utilities/change_builder/change_builder_core.dart
@@ -151,6 +151,22 @@ class EditBuilderImpl implements EditBuilder {
     }
   }
 
+  @override
+  void addSimpleLinkedEdit(String groupName, String text,
+      {LinkedEditSuggestionKind kind, List<String> suggestions}) {
+    addLinkedEdit(groupName, (LinkedEditBuilder builder) {
+      builder.write(text);
+      if (suggestions != null && kind != null) {

[scheglov, 2017/06/07 15:39:11]

It would be better to order kind != null && suggestions != null, like it is done
in parameters.

[Brian Wilkerson, 2017/06/07 16:07:19]

Done

+        for (String suggestion in suggestions) {
+          builder.addSuggestion(kind, suggestion);
+        }
+      } else if (suggestions != null || kind != null) {
+        throw new ArgumentError(
+            'Either both kind and suggestions must be provided or neither.');
+      }
+    });
+  }
+
   LinkedEditBuilderImpl createLinkedEditBuilder() {
     return new LinkedEditBuilderImpl(this);
   }