Sequence.insertSortedIter

Like [glib.sequence.Sequence.insertSorted], but uses a #GSequenceIterCompareFunc instead of a #GCompareDataFunc as the compare function.

iter_cmp is called with two iterators pointing into seq. It should return 0 if the iterators are equal, a negative value if the first iterator comes before the second, and a positive value if the second iterator comes before the first.

Note that when adding a large amount of data to a #GSequence, it is more efficient to do unsorted insertions and then call [glib.sequence.Sequence.sort] or [glib.sequence.Sequence.sortIter].