@Override
		public ISequentialOutStream getStream(int index, ExtractAskMode extractAskMode)
				throws SevenZipException {
			currentIndex = index;
			ISimpleInArchiveItem item = items[currentIndex];
			monitor.setMessage("Testing password for " + item.getPath());
			return null;
		}
This class is has the same layout and hacks re: setting currentIndex as {@link SZExtractCallback},
but is specialized to test passwords against the encrypted entries in the file.
Ghidra/Features/FileFormats/src/main/java/ghidra/file/formats/sevenzip/SevenZipFileSystem.java