anchor.diff:      _propertiesElement.innerHtml = '';
       _buildProperties().then((_) => _show());
     }
  -
  -  void _commit() => _hide();
   
     Future _buildProperties() {
       _addProperty(_propertiesElement, 'Name', _selectedResource.name);
  
positive.code:       _progressDescriptionElement.text = description;
      }
    }
  
    void _onSubmit(Event e) {
      e..stopPropagation()..preventDefault();
      _commit();
    }
  }
  
  class FileOpenAction extends SparkAction {
  
negative.code:   }
  
    void _commit() {
      super._commit();
  
      String appID = null;
      if (_existingInput.checked) {
        appID = _appIdInput.value;
  