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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 to_serializable_value(self):
 """ Parses the Hightonmodel to a serializable value such dicts, lists, strings This can be used to save the model in a NoSQL database :return: the serialized HightonModel :rtype: dict """

        return_dict = {}
        for name, field in self.__dict__.items():
            if isinstance(field, fields.Field):
                return_dict[name] = field.to_serializable_value()
        return return_dict