public static LoadBalancerId fromSerializedForm(String value) {
        int lastSeparator = value.lastIndexOf(":");
        ApplicationId application = ApplicationId.fromSerializedForm(value.substring(0, lastSeparator));
        ClusterSpec.Id cluster = ClusterSpec.Id.from(value.substring(lastSeparator + 1));
        return new LoadBalancerId(application, cluster);
    }
Create an instance from a serialized value on the form tenant:application:instance:cluster-id
node-repository/src/main/java/com/yahoo/vespa/hosted/provision/lb/LoadBalancerId.java