private boolean assignableFrom(Collection<Class<? extends Parser>> excludeParsers,
                                   Class<? extends Parser> p) {
        for (Class<? extends Parser> e : excludeParsers) {
            if (e.isAssignableFrom(p)) {
                return true;
            }
        }
        return false;
    }
The fallback parser, used when no better parser is available.
tika-core/src/main/java/org/apache/tika/parser/CompositeParser.java