How to return outer function from inside async inner function in Objective-C

Question

I want to return from outer function from inside async inner function. In swift, I would have used completion handler for this purpose which would escape from function. But

Answer 1

Easier is just to call another function that tells it's completed.

-(void)chosenFrom:(NSDictionary *)info{

    [self asyncCode:info withCompletion:^(NSData *imageData) {
        if(imageData) {
             [self completedAsync:imageData];
        }
    }];

}

-(void)completedAsync:(NSData*) imageData {
  // do your thang.
}