code: def _match_peer_lib(self, arg, ext):
      key = None
      if arg.endswith(ext):
          key = os.path.dirname(arg)
      return key if key and self.peers and key in self.peers else None
  
file_path: catboost/build/scripts/process_whole_archive_option.py
imports: import os
  import process_command_files
label_desc: Use image node_id 2 for calling the ProcessWholeArchiveOption obj's underlying member method code with example usage: obj._match_peer_lib(arg, ext) and returns: unknown