async def get_state(self):
await self._protocol.send_command("<STR_LIT>", callback=False)<EOL>return await self._protocol.await_event()<EOL>
Get the latest state change of QTM. If the :func:`~qtm.connect` on_event
        callback was set the callback will be called as well.

        :rtype: A :class:`qtm.QRTEvent`