How to use

validateHierarchy

method

in

co.cask.cdap.api.metadata.MetadataEntity$Builder

/**
 * Builds a {@link MetadataEntity} from the builder.
 *
 * @return {@link MetadataEntity} from the builder
 * @throws IllegalArgumentException if the key is a CDAP entity and the MetadataEntity is not correct to represent
 * the CDAP entity
 */
public MetadataEntity build() {
 if (parts.isEmpty()) {
  throw new IllegalArgumentException("key-value pair must be specified");
 }
 if (type == null) {
  // traverse till the last key and make that the type
  parts.keySet().forEach(x -> type = x);
 }
 validateHierarchy();
 return new MetadataEntity(new LinkedHashMap<>(parts), type);
}