ultimate check for nil from wil shipley

Asset.m

 if ([pushedCompleteTransaction.manuallySetTransactionDate isKindOfClass:[NSNull class]]
        || ([pushedCompleteTransaction.manuallySetTransactionDate respondsToSelector:@selector(length)]
            && ![pushedCompleteTransaction.manuallySetTransactionDate respondsToSelector:@selector(count)]
            && [(NSData *)pushedCompleteTransaction.manuallySetTransactionDate length] == 0)
        || ([pushedCompleteTransaction.manuallySetTransactionDate respondsToSelector:@selector(count)]
            )){
            

            formattedDate = [dateFormatterIn dateFromString:pushedTransaction.timeStamp];
            NSLog(@"using original timestamp");
            NSLog(@"using %@ as date", formattedDate);
            
        }