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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 from_jsondict(cls, dict_, decode_string=base64.b64decode, **additional_args):
 r"""Create an instance from a JSON style dict. Instantiate this class with parameters specified by the dict. This method takes the following arguments. .. tabularcolumns:: |l|L| =============== ===================================================== Argument Descrpition =============== ===================================================== dict\_ A dictionary which describes the parameters. For example, {"Param1": 100, "Param2": 200} decode_string (Optional) specify how to decode strings. The default is base64. This argument is used only for attributes which don't have explicit type annotations in _TYPE class attribute. additional_args (Optional) Additional kwargs for constructor. =============== ===================================================== """

        decode = lambda k, x: cls._decode_value(k, x, decode_string,
                                                **additional_args)
        kwargs = cls._restore_args(_mapdict_kv(decode, dict_))
        try:
            return cls(**dict(kwargs, **additional_args))
        except TypeError:
            # debug
            print("CLS %s" % cls)
            print("ARG %s" % dict_)
            print("KWARG %s" % kwargs)
            raise