def process_doc(self, env: BuildEnvironment, docname: str, document: nodes.document) -> None:
    if Symbol.debug_show_tree:
        print('process_doc:', docname)
        print(self.data['root_symbol'].dump(0))
        print('process_doc end:', docname)
def process_doc(self, env: BuildEnvironment, docname: str, document: nodes.document) -> None:
    if Symbol.debug_show_tree:
        print('process_doc:', docname)
        print(self.data['root_symbol'].dump(0))
        print('process_doc end:', docname)