code: def clear(self):
          
          self.data = {}
          self._num_arrivals = 0
          self._oArrivals = 0
          self.num_departures = 0
          self.num_system = 0
          self._num_total = 0
          self._current_t = 0
          self._time = infty
          self._next_ct = 0
          self._active = False
          self.queue = collections.deque()
          inftyAgent = InftyAgent()
          self._arrivals = [inftyAgent]
          self._departures = [inftyAgent]
docs: Clears out the queue. Removes all arrivals, departures, and
          queued agents from the :class:`.QueueServer`, resets
          ``num_arrivals``, ``num_departures``, ``num_system``, and the clock to
          zero. It also clears any stored ``data`` and the server is then
          set to inactive.