private static ProtonConfig getProtonConfig(VespaModel model, String configId) {
        ProtonConfig.Builder builder = new ProtonConfig.Builder();
        model.getConfig(builder, configId);
        return new ProtonConfig(builder);
    }
Recreate the combination used in some factory tests
config-model/src/test/java/com/yahoo/config/model/provision/ModelProvisioningTest.java