@Override
    public Set<MediaType> getSupportedTypes(ParseContext arg0) {
        return SUPPORTED_TYPES;
    }
Parser for Rar files.  This relies on 'unrar' being installed
and on the path.  This is not the default rar parser and must
be selected via the tika-config.xml.
tika-parsers/tika-parsers-standard/tika-parsers-standard-modules/tika-parser-pkg-module/src/main/java/org/apache/tika/parser/pkg/UnrarParser.java