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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 auth_required(method):
 """ This decorator is used to ensure that a user is authenticated before being able to access a flask route. It also adds the current user to the current flask context. """

    @functools.wraps(method)
    def wrapper(*args, **kwargs):
        _verify_and_add_jwt()
        try:
            return method(*args, **kwargs)
        finally:
            remove_jwt_data_from_app_context()
    return wrapper