xalan/src/main/java/org/apache/xml/dtm/ref/DTMDefaultBaseIterators.java [1272:1291]:
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    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.reset();
        return clone;
      }
      catch (CloneNotSupportedException e)
      {
        throw new DTMException(XMLMessages.createXMLMessage(XMLErrorResources.ER_ITERATOR_CLONE_NOT_SUPPORTED, null)); //"Iterator clone not supported.");
      }
    }
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xalan/src/main/java/org/apache/xml/dtm/ref/sax2dtm/SAX2DTM2.java [830:849]:
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    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.reset();
        return clone;
      }
      catch (CloneNotSupportedException e)
      {
        throw new DTMException(XMLMessages.createXMLMessage(XMLErrorResources.ER_ITERATOR_CLONE_NOT_SUPPORTED, null)); //"Iterator clone not supported.");
      }
    }
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