@Override
      public RequestStatusResponse invoke() throws AmbariException {
        for (ExtensionLinkRequest extensionLinkRequest : requests) {
          getManagementController().updateExtensionLink(extensionLinkRequest);
        }
        return null;
      }
The property ids for a ExtensionLink resource.
ambari-server/src/main/java/org/apache/ambari/server/controller/internal/ExtensionLinkResourceProvider.java