Create a new xmlXPathObjectPtr of type NodeSet and
           initialize it with the single Node @val

def xpathNewNodeSet(self):
        """Create a new xmlXPathObjectPtr of type NodeSet and
           initialize it with the single Node @val """
        ret = libxml2mod.xmlXPathNewNodeSet(self._o)
        if ret is None:raise xpathError('xmlXPathNewNodeSet() failed')
        return xpathObjectRet(ret)