def METHOD_NAME (self, name, attrs):
    self._stack.append( (self.current, self._text_parts))
    self.current = DataNode (nameChangeDict = self._ncDict)
    self._text_parts = []
    # xml attributes --> python attributes
    for k, v in attrs.items():
        self.current._add_xml_attr (TreeBuilder._name_mangle(k), v)