Function gtk_sys::gtk_icon_info_load_symbolic_for_context_async

pub unsafe extern "C" fn gtk_icon_info_load_symbolic_for_context_async(
    icon_info: *mut GtkIconInfo,
    context: *mut GtkStyleContext,
    cancellable: *mut GCancellable,
    callback: GAsyncReadyCallback,
    user_data: gpointer
)