@Override
        public boolean test(SSLHandshakeException e) {
            String message = e.getMessage();
            if (message == null || message.isBlank()) return false;
            return pattern.matcher(message).matches();
        }
Categorizes instances of {@link SSLHandshakeException}

@author bjorncs
container-core/src/main/java/com/yahoo/jdisc/http/server/jetty/SslHandshakeFailure.java