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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 _format_argument(arg):
 """Format the output of a `click.Argument`."""

    yield '.. option:: {}'.format(arg.human_readable_name)
    yield ''
    yield _indent('{} argument{}'.format(
        'Required' if arg.required else 'Optional',
        '(s)' if arg.nargs != 1 else ''))