code: def tasks(self, **opts):
          
          opts['channel_id'] = self.id
          qopts = {'order': 'priority,create_time'}
          return self.connection.listTasks(opts, qopts)
docs: Convenience wrapper around listTasks(...) for this channel ID.
  
          Tasks are sorted by priority and creation time.
  
          :param **opts: "opts" dict to the listTasks RPC.
                         For example, "state=[task_states.OPEN]" will return
                         only the "OPEN" tasks.
          :returns: deferred that when fired returns a list of Tasks.