"/org/gtk/Notifications", "org.gtk.Notifications",
"RemoveNotification", params, G_VARIANT_TYPE_UNIT,
G_DBUS_CALL_FLAGS_NONE, -1, NULL, NULL, NULL);
"/org/gtk/Notifications", "org.gtk.Notifications",
"RemoveNotification", params, G_VARIANT_TYPE_UNIT,
G_DBUS_CALL_FLAGS_NONE, -1, NULL, NULL, NULL);