code: def _process_arg(self, arg, ext=".a"):
      peer_key = self._match_peer_lib(arg, ext)
      lib_key = self._match_lib(arg)
      if peer_key:
          self.peers[peer_key] += 1
      if lib_key:
          self.libs[lib_key] += 1
      return peer_key if peer_key else lib_key
  
file_path: catboost/build/scripts/process_whole_archive_option.py
imports: import os
  import process_command_files
label_desc: Use image node_id 4 for calling the ProcessWholeArchiveOption obj's underlying member method code with example usage: obj._process_arg(arg, ext) and returns: unknown