public ChainedAttributeDetector groupAttributeDetector() {
    LOG.info("Creating instance with group attribute detectors: [{}]", groupAttributeDetectors);
    return new ChainedAttributeDetector(groupAttributeDetectors);
  }
Creates a chained attribute detector instance with user attribute detectors

@return the constructed ChainedAttributeDetector instance
ambari-server/src/main/java/org/apache/ambari/server/ldap/service/ads/detectors/AttributeDetectorFactory.java