iAd iOS 11.2 to 11.3 API Differences

ADClient.h
Declaration
From- (void)lookupAdConversionDetails:(nonnull void (^)(NSDate * _Nonnull, NSDate * _Nullable))completionHandler
To- (void)lookupAdConversionDetails:(nonnull void (^)(NSDate * _Nullable, NSDate * _Nullable))completionHandler