pub unsafe extern "C" fn FMOD_SoundGroup_GetMuteFadeSpeed(
soundgroup: *mut FMOD_SOUNDGROUP,
speed: *mut f32,
) -> FMOD_RESULTpub unsafe extern "C" fn FMOD_SoundGroup_GetMuteFadeSpeed(
soundgroup: *mut FMOD_SOUNDGROUP,
speed: *mut f32,
) -> FMOD_RESULT