protected String filename;

    protected List<String> argList = new ArrayList<>();

    public PythonJob filename(final String filename) {
        this.filename = filename;
        return this;
    }

    public PythonJob arg(final String value) {
        argList.add(value);
        return this;
    }

    public PythonJob args(final String... values) {

		case *AssertExpr:
			m = n.Type
		case *TypeSwitchGuard:
			m = n.X
		case *Operation:
			if n.Y != nil {
				m = n.Y
				continue
			}
			m = n.X
		case *CallExpr:
			if l := lastExpr(n.ArgList); l != nil {
				m = l
				continue
			}
			m = n.Fun
		case *ListExpr:
			if l := lastExpr(n.ElemList); l != nil {
				m = l
				continue
			}
			return n.Pos()

		// types

        tg.enumerate(tgList);

        boolean seen = false;

        for (ThreadGroup aTgList : tgList) {
            if (!aTgList.getName().equals(DefaultArtifactResolver.DaemonThreadCreator.THREADGROUP_NAME)) {
                continue;
            }

            seen = true;

            tg = aTgList;
            Thread[] ts = new Thread[tg.activeCount()];
            tg.enumerate(ts);

		case types.UntypedString,
			types.String:
			return m.t&argString != 0

		case types.UnsafePointer:
			return m.t&(argPointer|argInt) != 0

		case types.UntypedRune:
			return m.t&(argInt|argRune) != 0

		case types.UntypedNil:
			return false

		case types.Invalid:
			return true // Probably a type check problem.
		}
		panic("unreachable")
	}

	return false
}