private boolean isExcluded(Collection<Class<? extends Parser>> excludeParsers,
                               Class<? extends Parser> p) {
        return excludeParsers.contains(p) || assignableFrom(excludeParsers, p);
    }
The fallback parser, used when no better parser is available.
tika-core/src/main/java/org/apache/tika/parser/CompositeParser.java