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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 _get_arg_tokens(cli):
 """ Tokens for the arg-prompt. """

    arg = cli.input_processor.arg

    return [
        (Token.Prompt.Arg, '(arg: '),
        (Token.Prompt.Arg.Text, str(arg)),
        (Token.Prompt.Arg, ') '),
    ]