/**
* GstIterator:
+ * @copy: The function to copy the iterator
* @next: The function to get the next item in the iterator
* @item: The function to be called for each item retrieved
* @resync: The function to call when a resync is needed.
* @cookie: The cookie; the value of the master_cookie when this iterator was
* created.
* @master_cookie: A pointer to the master cookie.
+ * @size: the size of the iterator
*
* #GstIterator base structure. The values of this structure are
* protected for subclasses, use the methods to use the #GstIterator.