code: def pathsep(self) -> str:
      return os.path.sep
  
imports: import glob
  import os
  import shutil
  from typing import List, Dict, Union, Tuple, Iterator, BinaryIO, TextIO
  from ...utils import implements, stringify_path
  from .base import FileSystem, path_type
label_desc: Use image node_id 15 for calling the LocalFileSystem obj's underlying member method code with example usage: obj.pathsep() and returns: os