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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 chainable(f):
 """ Decorator which causes a 'void' function to return self Allows chaining of multiple modifier class methods. """

    @wraps(f)
    def wrapper(self, *args, **kwargs):
        # perform action
        f(self, *args, **kwargs)
        # return reference to class.
        return self
    return wrapper