Tested with:
print(currentActivity());
var id = currentActivity();
var desktops = desktopsForActivity(id);
print(desktops.length);
for (var i = 0; i < desktops.length; ++i) {
print(desktops[i].id);
}
var id = createActivity("Day 4 - Test 1 - " + activities().length);
var desktops = desktopsForActivity(id);
for (var i = 0; i < desktops.length; ++i) {
print(desktops[i].id);
}