code: def statistics(self):
          
          if self._statistics is None:
              self._statistics = TaskQueueStatisticsList(
                  self._version,
                  workspace_sid=self._solution['workspace_sid'],
                  task_queue_sid=self._solution['sid'],
              )
          return self._statistics
docs: Access the statistics
  
          :returns: twilio.rest.taskrouter.v1.workspace.task_queue.task_queue_statistics.TaskQueueStatisticsList
          :rtype: twilio.rest.taskrouter.v1.workspace.task_queue.task_queue_statistics.TaskQueueStatisticsList