(element-type) should have a full name like Clutter.Actor rather than
a non-namespaced name like Actor. gobject-introspection has become
more strict about this with the recent scanner rewrite.
http://bugzilla.clutter-project.org/show_bug.cgi?id=2301
*
* Retrieves all the children of @container.
*
- * Return value: (element-type Actor) (transfer container): a list
+ * Return value: (element-type Clutter.Actor) (transfer container): a list
* of #ClutterActor<!-- -->s. Use g_list_free() on the returned
* list when done.
*