code: def stat(self):
      if self._stat is None:
          self._stat = oss_stat(self._path)
      return self._stat
  
imports: import base64
  import json
  import os
  from ..base import path_type, stringify_path
  from ....utils import lazy_import
label_desc: Use image node_id 4 for calling the OSSFileEntry obj's underlying member method code with example usage: obj.stat() and returns: self