code: def lastElementChild(self):
          
          ret = libxml2mod.xmlLastElementChild(self._o)
          if ret is None:return None
          __tmp = xmlNode(_obj=ret)
          return __tmp
docs: Finds the last child node of that element which is a
            Element node Note the handling of entities references is
            different than in the W3C DOM element traversal spec since
            we don't have back reference from entities content to
             entities references.