code: def get_widget_types(self, scope, project=None):
          
          route_values = {}
          if project is not None:
              route_values['project'] = self._serialize.url('project', project, 'str')
          query_parameters = {}
          if scope is not None:
              query_parameters['$scope'] = self._serialize.query('scope', scope, 'str')
          response = self._send(http_method='GET',
                                location_id='6b3628d3-e96f-4fc7-b176-50240b03b515',
                                version='5.0-preview.1',
                                route_values=route_values,
                                query_parameters=query_parameters)
          return self._deserialize('WidgetTypesResponse', response)
docs: GetWidgetTypes.
          [Preview API] Get all available widget metadata in alphabetical order.
          :param str scope:
          :param str project: Project ID or project name
          :rtype: :class:`<WidgetTypesResponse> <azure.devops.v5_0.dashboard.models.WidgetTypesResponse>`