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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 action(args):
 """Strips non-current files and rollback information from a refpkg. *args* should be an argparse object with fields refpkg (giving the path to the refpkg to operate on). """

    log.info('loading reference package')

    refpkg.Refpkg(args.refpkg, create=False).strip()