code: def clear(self):
          '''
          Clear all the events in this queue, including any sub-queues.
          
          :returns: ((queueEvents,...), (queueEmptyEvents,...)) where queueEvents are QueueCanWriteEvents generated by clearing.
          '''
          l = len(self)
          ret = self._clear()
          if self.parent is not None:
              pr = self.parent.notifyPop(self, l)
              ret[0].extend(pr[0])
              ret[1].extend(pr[1])
          return ref clear(self):
          '''
          Clear all the events in this queue, including any sub-queues.
          
          :returns: ((queueEvents,...), (queueEmptyEvents,...)) where queueEvents are QueueCanWriteEvents generated by clearing.
          '''
          l = len(self)
          ret = self._clear()
          if self.parent is not None:
              pr = self.parent.notifyPop(self, l)
              ret[0].extend(pr[0])
              ret[1].extend(pr[1])
          return ret
docs: Clear all the events in this queue, including any sub-queues.
          
          :returns: ((queueEvents,...), (queueEmptyEvents,...)) where queueEvents are QueueCanWriteEvents generated by clearing.