NSBitmapImageRep.LoadStatus.willNeedAllData
Incremental loading cannot be supported.
Declaration
case willNeedAllDataDiscussion
Until you call incrementalLoad(from:complete:) with true, this status will be returned. You can continue to call the method but no decompression will take place. Once you do call the method with true, then the image will be decompressed and one of the final three status messages will be returned.