def _add_copy_project_arg(arg_parser):
    """
    Adds optional copy_project parameter to a parser.
    :param arg_parser: ArgumentParser parser to add this argument to.
    """
    arg_parser.add_argument('--copy', help=
        'Instead of delivering the specified project, deliver a copy of the project.'
        , action='store_true', default=False, dest='copy_project')
