code: def ls(self, path: path_type) -> List[path_type]:
      path = stringify_path(path)
      return sorted(os.path.join(path, x) for x in os.listdir(path))
  
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 3 for calling the LocalFileSystem obj's underlying member method code with example usage: obj.ls(path) and returns: sorted