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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_dict(cls, d):
 """ Restores its state from a dictionary, used in de-JSONification. :param d: the object dictionary :type d: dict """

        conf = {}
        for k in d["config"]:
            v = d["config"][k]
            if isinstance(v, dict):
                conf[str(k)] = get_dict_handler(d["config"]["type"])(v)
            else:
                conf[str(k)] = v
        return get_class(str(d["class"]))(config=conf)