code: def cat(self, path: path_type):
      raise NotImplementedError
  
imports: from typing import List, Dict, Tuple, Iterator
  from urllib import parse
  from ...utils import implements, lazy_import
  from ._oss_lib import common
  from ._oss_lib.glob import glob
  from ._oss_lib.handle import OSSIOBase
  from .base import FileSystem, path_type
label_desc: Use image node_id 2 for calling the OSSFileSystem obj's underlying member method code with example usage: obj.cat(path) without return types