goto/label in vala

void main () {
    test (3);
}

int go_to (Label label){ return label (); }

int test1 (){
    print ("test1\n");
    return -1;
}
int test2 (){
    print ("test2\n");
    return -1;
}
int test3 (){
    print ("test3\n");
    return 1;
}

void test (int mode){
    switch(mode){
        case 1:
            go_to (test1);
            break;
        case 2:
            go_to (test2);
            break;
        case 3:
            test (go_to (test3));
            break;
        default:
        break;
    }
}

public delegate int Label ();