When extracting a 7z archive and skipping some entries by returning null from IArchiveExtractCallback.getStream(...), the setOperationResult(ExtractOperationResult.OK) is always invoked, independently if the entry was 'skipped' before or not.
with Zip and Rar archives setOperationResult(ExtractOperationResult.OK) is never invoked for skipped entries, only for actually extracted ones.
should be the same for 7z archives too.
7-Zip JBinding 16.02-2.01 / windows-amd64