Function clutter_animatable_animate_property 

pub unsafe extern "C" fn clutter_animatable_animate_property(
    animatable: *mut ClutterAnimatable,
    animation: *mut ClutterAnimation,
    property_name: *const c_char,
    initial_value: *const GValue,
    final_value: *const GValue,
    progress: c_double,
    value: *mut GValue,
) -> gboolean