qmk_firmware/data/xap/xap_0.3.1.hjson

{
    version: 0.3.1
    routes: {
        0x01: {
            routes: {
                0x10: {
                    type: command
                    name: Keycodes version query
                    define: KEYCODES_VERSION_QUERY
                    description:
                        '''
                        Query the version of the keycodes known by the firmware.
                        '''
                    return_type: u32
                    return_purpose: bcd-version
                    return_constant: QMK_KEYCODES_VERSION_BCD
                }
            }
        }
    }
}