def add_parser_arguments(parser):
    """ Add additional subcommands onto this command """
    parser.add_argument('network', metavar='NETWORK', type=str, nargs=1,
        help='Ethereum network to connect the console to')
    parser.add_argument('-a', '--address', type=str, dest='address', help=
        'Address of the Ethereum account to use for deployment')
    parser.add_argument('-p', '--passphrase', metavar='PASSPHRASE', type=
        str, nargs='?', dest='passphrase', help=
        'The passphrase to use to encrypt the keyfile. Leave empty for prompt.'
        )
    return parser
