anchor.diff:      test('async method call', () async {
         await driver.check(
             breakpointId: 'globalFunctionBP',
  -          expression: 'c.asyncMethod(2)',
  -          expectedResult: '_Future.new {Symbol(_state): 1, '
  -              'Symbol(_resultOrListeners): null, '
  -              'Symbol(_zone): _RootZone {}');
  +          expression: 'c.asyncMethod(2).runtimeType.toString()',
  +          expectedResult: '_Future<int>');
       });
   
       test('extension method call', () async {
  
positive.code:     test('awaited method call', () async {
        await driver.check(
            breakpointId: 'bp1',
            expression: 'c.asyncMethod(1)',
            expectedResult: '_Future.new {Symbol(_state): 1, '
                'Symbol(_resultOrListeners): null, '
                'Symbol(_zone): _RootZone {}');
      }, skip: "'await' is not yet supported in expression evaluation.");
  
      test('awaited method call', () async {
  
negative.code:     test('async method call', () async {
        await driver.check(
            breakpointId: 'constructorBP',
            expression: 'asyncMethod(2).runtimeType.toString()',
            expectedResult: '_Future<int>');
      });
  
      test('extension method call', () async {
  