class_docstr: A ResourceBundle manages internationalization of string resources
docstr: Return all keys present in this specific ResourceBundle
docstr_tok: ["Return","all","keys","present","in","this","specific","ResourceBundle"]
code: def keys(self) -> KeysView[str, str]:
      """
      Return all keys present in this specific ResourceBundle
      """
      return self._mapping.keys()
  
imports: from __future__ import annotations
  import codecs
  import os
  import re
  from os import PathLike
  from pathlib import Path
  from typing import KeysView, Sequence
  from .exceptions import MalformedResourceBundleError, NotInResourceBundleError
label_desc: Use image node_id 10 for calling the ResourceBundle obj's underlying member method code with example usage: obj.keys() and returns: self