Sorry for that – so the phpDoc should probably be updated then. Can you please give me an example, where the return value is used?
As for the two Iterators and the AbstractSessionArrayStorage, I still think they should not return anything. According to the PHP Manual the `rewind` method of both the SPL APCIterator and the GlobIterator do not return a value. The called methods `offsetSet` and `offsetUnset` of the AbstractSessionArrayStorage do not return a value as well.