Issue 21612. Support for multiple returns in the 'Extract Method' refactoring.

pkg/analysis_server/test/services/refactoring/inline_method_test.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 test.services.refactoring.inline_method;
 
 import 'dart:async';
 
 import 'package:analysis_server/src/protocol.dart' hide Element;
 import 'package:analysis_server/src/services/refactoring/inline_method.dart';
@@ skipping 916 matching lines @@
     return _assertSuccessfulRefactoring(r'''
 class A {
   foo() {
     print(0);
   }
 }
 ''');
   }
 
   test_method_this() {
-    // TODO
     indexTestUnit(r'''
 class A {
   accept(B b) {}
 }
 class B {
   test(A a) {
     print(this);
     a.accept(this);
   }
 }
@@ skipping 471 matching lines @@
         });
       });
     });
   }
 
   void _createRefactoring(String search) {
     int offset = findOffset(search);
     refactoring = new InlineMethodRefactoring(searchEngine, testUnit, offset);
   }
 }