NSCacheDelegate
NSCoding
NSConnectionProtocol
NSCopying
NSDecimalNumberBehaviors
NSDiscardableContent
NSFastEnumeration
NSKeyValueProxyCaching
NSLocking
NSMutableCopying
NSObject
NSURLAuthenticationChallengeSender
NSURLDataDecoder
NSURLDownloadDecoder
NSURLHandleClient
NSURLProtocolCFRunloopScheduling
NSURLProtocolClient
NSXMLParserDelegate