@Override
    public Set<MediaType> getSupportedTypes(ParseContext context) {
        return supportedTypes;
    }
For now, this parser isn't even registered.  It contains
code that will detect the newer 2018 .keynote, .numbers, .pages files.
tika-parsers/tika-parsers-standard/tika-parsers-standard-modules/tika-parser-apple-module/src/main/java/org/apache/tika/parser/iwork/iwana/IWork18PackageParser.java