Get property state from device.

async def get_property(self, command):
        """Get property state from device."""
        _LOGGER.debug("Getting property %s", command)
        if self.__checkLock():
            return BUSY
        timeout = self.__get_timeout(command)
        response = await self.send_request(
            timeout=timeout,
            params=EPSON_KEY_COMMANDS[command],
            type='json_query')
        if not response:
            return False
        try:
            return response['projector']['feature']['reply']
        except KeyError:
            return BUSY