@VisibleForTesting
  MetadataResourceUtil metadataResourceUtil(JobModel jobModel) {
    return new MetadataResourceUtil(jobModel, this.metrics, this.config);
  }
Wrapper around {@link MetadataResourceUtil} constructor so it can be stubbed during testing.
samza-core/src/main/java/org/apache/samza/coordinator/staticresource/StaticResourceJobCoordinator.java