Send feedback for the INLINE_LOCAL_VARIABLE refactoring.

pkg/analysis_server/lib/src/services/refactoring/inline_local.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.
 
 library services.src.refactoring.inline_local;
 
 import 'dart:async';
 
 import 'package:analysis_server/src/protocol.dart' hide Element;
 import 'package:analysis_server/src/services/correction/status.dart';
@@ skipping 29 matching lines @@
   InlineLocalRefactoringImpl(this.searchEngine, this.unit, this.offset) {
     file = unit.element.source.fullName;
     utils = new CorrectionUtils(unit);
   }
 
   @override
   String get refactoringName => 'Inline Local Variable';
 
   @override
   int get referenceCount {
+    if (_references == null) {
+      return 0;
+    }
     return _references.length;
   }
 
   @override
+  String get variableName {
+    if (_variableElement == null) {
+      return null;
+    }
+    return _variableElement.name;
+  }
+
+  @override
   Future<RefactoringStatus> checkFinalConditions() {
     RefactoringStatus result = new RefactoringStatus();
     return new Future.value(result);
   }
 
   @override
   Future<RefactoringStatus> checkInitialConditions() {
     RefactoringStatus result = new RefactoringStatus();
     // prepare variable
     {
@@ skipping 103 matching lines @@
    */
   bool _isIdentifierStringInterpolation(AstNode parent) {
     if (parent is InterpolationExpression) {
       InterpolationExpression element = parent;
       return element.beginToken.type ==
           TokenType.STRING_INTERPOLATION_IDENTIFIER;
     }
     return false;
   }
 }