code: void pushElemTemplateElement(ElemTemplateElement elem)
    {
  
      if (elem.getUid() == -1)
        elem.setUid(nextUid());
  
      m_elems.push(elem);
    }
docs: Push the current XSLTElementProcessor to the top of the stack.  As a
  side-effect, set the document order index (simply because this is a
  convenient place to set it).
  
  @param elem Should be a non-null reference to the intended current
  template element.