I'm building a carArray and want to filter the contents conditionally, using an NSPredicate, like so:

NSPredicate *pred;
switch (carType) {
  case FreeCar:
    pred = [NSPredicate predicateWithFormat:@"premium = NO"];
    break;
  case PremiumCar:
    pred = [NSPredicate predicateWithFormat:@"premium = YES"];
    break;
  default:
    pred = [NSPredicate predicateWithFormat:@"SOME PREDICATE THAT RETURNS EVERYTHING"];
    break;
}
self.carArray = [aCarArrayIGotFromSomewhere filteredArrayUsingPredicate:pred];

My question is, what is the correct syntax for the value I've stubbed in as SOME PREDICATE THAT RETURNS EVERYTHING which returns all of the instances in the array / set?

PS - I know the answer and will post it immediately, just sharing it for everyone's reference as an earlier search on SO did not yield the result.