* Boston, MA 02111-1307, USA.
*/
+#include "config.h"
+
#include <glib-object.h>
#include "atkobject.h"
*
* Constructs the union of the two sets.
*
- * Returns: (transfer full): a new #AtkStateSet which is the union of the two
- * sets, returning %NULL is empty.
+ * Returns: (nullable) (transfer full): a new #AtkStateSet which is
+ * the union of the two sets, returning %NULL is empty.
**/
AtkStateSet*
atk_state_set_or_sets (AtkStateSet *set,