code: def fetch(self, task_channel=values.unset):
          
          return self._proxy.fetch(task_channel=task_channel, )
docs: Fetch a WorkspaceRealTimeStatisticsInstance
  
          :param unicode task_channel: Filter real-time and cumulative statistics by TaskChannel.
  
          :returns: Fetched WorkspaceRealTimeStatisticsInstance
          :rtype: twilio.rest.taskrouter.v1.workspace.workspace_real_time_statistics.WorkspaceRealTimeStatisticsInstance