public String getServiceDisplay(String service) {
    if (m_serviceNames.containsKey(service)) {
      return m_serviceNames.get(service);
    }

    return service;
  }
@return the service display name, or the service name if not set
ambari-server/src/main/java/org/apache/ambari/server/stack/upgrade/orchestrate/UpgradeContext.java