anchor.diff:  
         // If the Flutter Engine doesn't support service registration this will
         // have no effect
  -      _peer.sendNotification('_registerService', <String, String>{
  +      _peer.sendNotification('registerService', <String, String>{
           'service': 'reloadSources',
           'alias': 'Flutter Tools',
         });
  
positive.code: 
        // If the Flutter Engine doesn't support service registration this will
        // have no effect
        _peer.sendNotification('_registerService', <String, String>{
          'service': 'hotRestart',
          'alias': 'Flutter Tools',
        });
  
negative.code:         }
        });
  
        _peer.sendNotification('registerService', <String, String>{
          'service': 'compileExpression',
          'alias': 'Flutter Tools',
        });
  