Pop the element end from the RelaxNG validation stack.

def relaxNGValidatePopElement(self, doc, elem):
        """Pop the element end from the RelaxNG validation stack. """
        if doc is None: doc__o = None
        else: doc__o = doc._o
        if elem is None: elem__o = None
        else: elem__o = elem._o
        ret = libxml2mod.xmlRelaxNGValidatePopElement(self._o, doc__o, elem__o)
        return ret