def known(self, node):
        """ resolve type referenced by @xsi:type """
        ref = node.get('type', Namespace.xsins)
        if ref is None:
            return None
        qref = qualify(ref, node, node.namespace())
        query = BlindQuery(qref)
        return query.execute(self.schema)
def known ( self , node ) : ref = node . get ( 'type' , Namespace . xsins ) if ref is None : return None qref = qualify ( ref , node , node . namespace ( ) ) query = BlindQuery ( qref ) return query . execute ( self . schema )
resolve type referenced by @xsi:type