Send command to Epson.

async def send_command(self, command):
        """Send command to Epson."""
        _LOGGER.debug("Sending command to projector %s", command)
        if self.__checkLock():
            return False
        self.__setLock(command)
        response = await self.send_request(
            timeout=self.__get_timeout(command),
            params=EPSON_KEY_COMMANDS[command],
            type='directsend',
            command=command)
        return response