def _portsnap():
    ret = ['portsnap']
    if float(__grains__['osrelease']) >= 10:
        ret.append('--interactive')
    return ret
Create and add a clapp.Arg() to the application on the fly
dataset/ETHPy150Open saltstack/salt/salt/modules/freebsdports.py/_portsnap--crossover with--dataset/ETHPy150Open kbknapp/Clapp-py/clapp/clapp.py/App.new_subcommand_with_args