* Complement the validation message bundle with a dedicated message
* for our keyword validator
*/
final String key = "missingDivisors";
final String value = "integer value is not a multiple of all divisors";
final MessageSource source = MapMessageSource.newBuilder()
.put(key, value).build();
final MessageBundle bundle
= MessageBundles.getBundle(JsonSchemaValidationBundle.class)
.thaw().appendSource(source).freeze();