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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 extract_args(cls, *args):
 """ Takes any arguments like a model and crud, or just one of those, in any order, and return a model and crud. """

        model = None
        crudbuilder = None

        for arg in args:
            if issubclass(arg, models.Model):
                model = arg
            else:
                crudbuilder = arg

        return [model, crudbuilder]