code: def task_channels(self):
          
          if self._task_channels is None:
              self._task_channels = TaskChannelList(self._version, workspace_sid=self._solution['sid'], )
          return self._task_channels
docs: Access the task_channels
  
          :returns: twilio.rest.taskrouter.v1.workspace.task_channel.TaskChannelList
          :rtype: twilio.rest.taskrouter.v1.workspace.task_channel.TaskChannelList