code: public java.util.List<String> getDomainControllers() {
          if (domainControllers == null) {
              domainControllers = new com.amazonaws.internal.SdkInternalList<String>();
          }
          return domainControllers;
      }
docs: <p>
  List of IPv4 addresses, NetBIOS names, or host names of your domain server. If you need to specify the port
  number include it after the colon (“:”). For example, <code>mydc.mydomain.com:389</code>.
  </p>
  
  @return List of IPv4 addresses, NetBIOS names, or host names of your domain server. If you need to specify the
  port number include it after the colon (“:”). For example, <code>mydc.mydomain.com:389</code>.