Compares two given items according to the sort order implemented by the sorter.
Sorters implement a partial order:
The sorter may signal it conforms to additional constraints via the return value of gtk.sorter.Sorter.getOrder.
first item to compare
second item to compare
gtk.types.Ordering.Equal if item1 == item2, gtk.types.Ordering.Smaller if item1 < item2, gtk.types.Ordering.Larger if item1 > item2
Compares two given items according to the sort order implemented by the sorter.
Sorters implement a partial order:
The sorter may signal it conforms to additional constraints via the return value of gtk.sorter.Sorter.getOrder.