@Override
  public RequestStatus deleteResources(Request request, Predicate predicate) throws SystemException,
      UnsupportedPropertyException, NoSuchResourceException, NoSuchParentResourceException {
    throw new UnsupportedOperationException("Cannot delete a Configuration resource.");
  }
Throws an exception, as Configurations cannot be deleted.
ambari-server/src/main/java/org/apache/ambari/server/controller/internal/ConfigurationResourceProvider.java