final Map<String, JsonNode> digests = Maps.newTreeMap();
digests.put(K1, JacksonUtils.nodeFactory().nullNode());
digests.put(K2, JacksonUtils.nodeFactory().nullNode());
final SchemaDigest digest = new SchemaDigest(null, digests);
final ProcessingReport report = mock(ProcessingReport.class);
final ValidatorList context
= validatorBuilder.process(report, digest);
final List<KeywordValidator> list = Lists.newArrayList(context);