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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 add_file_argument(self, *args, **kwargs):
 """ Add an argument that represents the location of a file :param args: :param kwargs: :return: """

        rval = self.add_argument(*args, **kwargs)
        self.file_args.append(rval)
        return rval