+ def _graph_is_configured(self):
+ self._msg_iter = self._create_input_port_message_iterator(
+ self._input_ports['in']
+ )
+
+ # add two interrupters, set one of them
+ interrupter1 = bt2.Interrupter()
+ interrupter2 = bt2.Interrupter()
+ self._graph.add_interrupter(interrupter1)