question: public DTMAxisIterator cloneIterator ( ) { _isRestartable = false ; try { final PrecedingIterator clone = ( PrecedingIterator ) super . clone ( ) ; final int [ ] stackCopy = new int [ _stack . length ] ; System . arraycopy ( _stack , 0 , stackCopy , 0 , _stack . length ) ; clone . _stack = stackCopy ; return clone ; } catch ( CloneNotSupportedException e ) { throw new DTMException ( XMLMessages . createXMLMessage ( XMLErrorResources . ER_ITERATOR_CLONE_NOT_SUPPORTED , null ) ) ; } }
target:  Returns a deep copy of this iterator.   The cloned iterator is not reset.