Pushes other iterator onto it. All calls performed on it are
forwarded to other. If other returns GST_ITERATOR_DONE, it is
popped again and calls are handled by it again.
This function is mainly used by objects implementing the iterator
next function to recurse into substructures.
When gst_iterator_resync() is called on it, other will automatically be
popped.
MT safe.
Pushes other iterator onto it. All calls performed on it are forwarded to other. If other returns GST_ITERATOR_DONE, it is popped again and calls are handled by it again. This function is mainly used by objects implementing the iterator next function to recurse into substructures. When gst_iterator_resync() is called on it, other will automatically be popped. MT safe.