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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def GetParserObjectByName(cls, parser_name):
 """Retrieves a specific parser object by its name. Args: parser_name (str):
 name of the parser. Returns: BaseParser: parser object or None. """

    parser_class = cls._parser_classes.get(parser_name, None)
    if parser_class:
      return parser_class()
    return None