Foundation macOS 11.1 to 11.3 API Differences

NSError.h

Added NSMultipleUnderlyingErrorsKey

Added NSError.underlyingErrors

NSProgress.h

Added NSProgressFileOperationKindUploading

NSURL.h

Added NSURLUbiquitousItemIsExcludedFromSyncKey

NSURLRequest.h

Added NSURLRequest.assumesHTTP3Capable

Added NSMutableURLRequest.assumesHTTP3Capable

NSURLSession.h

Added NSURLSessionTask.prefersIncrementalDelivery