private static MessageDigest getMd5Instance() {
        try {
            return MessageDigest.getInstance("MD5");
        } catch (NoSuchAlgorithmException e) {
            throw new RuntimeException("Could not get md5 instance");
        }
    }
Utilities for mangling config text, finding checksums, finding name and namespace in .def files etc.
config/src/main/java/com/yahoo/vespa/config/util/ConfigUtils.java