code: def pause(self):
          
          for client in self._snippet_clients.values():
              self._device.log.debug(
                  'Clearing host port %d of SnippetClient<%s>.',
                  client.host_port, client.package)
              client.clear_host_port()
docs: Pauses all the snippet clients under management.
  
          This clears the host port of a client because a new port will be
          allocated in `resume`.