async def _report_version(self):
        """
        This is a private message handler method.
        This method reads the following 2 bytes after the report version
        command (0xF9 - non sysex).
        The first byte is the major number and the second byte is the
        minor number.

        :returns: None
        """
        # get next two bytes
        major = await self.read()
        version_string = str(major)
        minor = await self.read()
        version_string += '.'
        version_string += str(minor)
        self.query_reply_data[PrivateConstants.REPORT_VERSION] = version_string