private RequestStageContainer createRequest() {
    ActionManager actionManager = getManagementController().getActionManager();

    RequestStageContainer requestStages = new RequestStageContainer(
            actionManager.getNextRequestId(), null, requestFactory, actionManager);
    requestStages.setRequestContext(INSTALL_PACKAGES_FULL_NAME);

    return requestStages;
  }
Returns true if there is at least one versionable component on host for a given
stack.
ambari-server/src/main/java/org/apache/ambari/server/controller/internal/ClusterStackVersionResourceProvider.java