pub unsafe extern "C" fn spAnimationState_addEmptyAnimation(
self_: *mut spAnimationState,
trackIndex: c_int,
mixDuration: f32,
delay: f32,
) -> *mut spTrackEntrypub unsafe extern "C" fn spAnimationState_addEmptyAnimation(
self_: *mut spAnimationState,
trackIndex: c_int,
mixDuration: f32,
delay: f32,
) -> *mut spTrackEntry