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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 create(cls, class_name: str, monoid_type=Union[Monoid, str]):
 """Create Writer subclass using specified monoid type. lets us create a Writer that uses a different monoid than str for the log. """


        def unit(cls, value):
            if hasattr(monoid_type, "empty"):
                log = monoid_type.empty()
            else:
                log = monoid_type()

            return cls(value, log)

        return type(class_name, (Writer, ), dict(unit=classmethod(unit)))