def add_simple_jar(parser):
    """ Add --simple_jar option to parser. """
    parser.add_argument('-s', '--simple_jar', action='store_true', help=
        'Instead of creating an Uber-JAR for the topology, which contains all of its JVM dependencies, create a simple JAR with just the code for the project.  This is useful when your project is pure Python and has no JVM dependencies.'
        )
