@Override
		public void prepareOperation(ExtractAskMode extractAskMode) throws SevenZipException {
			// nothing
		}
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