void addLink(URI link) {
        if (link == null) {
            throw new IllegalArgumentException("Missing Link");
        }
        List<URI> copy = new ArrayList<>(links.size() + 1);
        copy.addAll(links);
        copy.add(link);
        links = Collections.unmodifiableList(copy);
    }
Add a link to this mime type

@param link
tika-core/src/main/java/org/apache/tika/mime/MimeType.java