pub unsafe extern "C" fn gsk_cross_fade_node_new(
start: *mut GskRenderNode,
end: *mut GskRenderNode,
progress: c_float,
) -> *mut GskCrossFadeNode
pub unsafe extern "C" fn gsk_cross_fade_node_new(
start: *mut GskRenderNode,
end: *mut GskRenderNode,
progress: c_float,
) -> *mut GskCrossFadeNode