docs: def __get_calls_from_parser(proxy_parser, real_parser):
      """
      This actually executes the calls registered in the ProxyArgumentParser.
  
      :param proxy_parser: ProxyArgumentParser instance
      :param real_parser:  ArgumentParser instance
      """
      __parsers[proxy_parser] = real_parser
      for method, safe, args, kwargs, proxy_subparser in proxy_parser.calls:
          args = (__proxy_to_real_parser(v) for v in args)
          kwargs = {k: __proxy_to_real_parser(v) for k, v in kwargs.items()}
          real_subparser = getattr(real_parser, method)(*args, **kwargs)
          if real_subparser is not None:
              __get_calls_from_parser(proxy_subparser, real_subparser)