code: def resume(self):
          
          for client in self._snippet_clients.values():
              # Resume is only applicable if a client is alive and does not have
              # a host port.
              if client.is_alive and client.host_port is None:
                  self._device.log.debug('Resuming SnippetClient<%s>.',
                                         client.package)
                  client.restore_app_connection()
              else:
                  self._device.log.debug('Not resuming SnippetClient<%s>.',
                                         client.package)
docs: Resumes all paused snippet clients.