code: def GetParserObjectByName(cls, parser_name):
      
      parser_class = cls._parser_classes.get(parser_name, None)
      if parser_class:
        return parser_class()
      return None
docs: Retrieves a specific parser object by its name.
  
      Args:
        parser_name (str): name of the parser.
  
      Returns:
        BaseParser: parser object or None.