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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 implementation(self, for_type=None, for_types=None):
 """Return a decorator that will register the implementation. Example: @multimethod def add(x, y):
 pass @add.implementation(for_type=int) def add(x, y):
 return x + y @add.implementation(for_type=SomeType) def add(x, y):
 return int(x) + int(y) """

        for_types = self.__get_types(for_type, for_types)

        def _decorator(implementation):
            self.implement(implementation, for_types=for_types)
            return self

        return _decorator