code: def pathsep(self):
      return os.path.sep
  
imports: import os
  import posixpath
  import sys
  import urllib.parse
  import warnings
  from os.path import join
  import pyarrow
  from pyarrow.util import doc, _stringify_path, _is_path_like, _DEPR_MSG
label_desc: Use image node_id 11 for calling the LocalFileSystem obj's underlying member method code with example usage: obj.pathsep() and returns: os