PageTabBarController作为自定义类

Question

如何将故事板中的视图控制器的自定义类设置为指向 PageTabBarController ？

目前我正在

    *** Terminating app due to uncaught exception 'NSInternalInconsistencyException', 
reason: 'Could not load NIB in bundle: 'NSBundle </Developer/CoreSimulator/Devices/D0067EFA-F147-4500-9528-835B359CE993/data/Containers/Bundle/Application/9AB84E67-96A5-4CC0-AA53-3F292511260E/PageTabBarController.app> (loaded)' with name 'TXs-jd-44x-view-mDN-5j-iHs''

以下是我正在编辑的原始代码https://github.com/CosmicMind/Samples/tree/master/Material/Programmatic/PageTabBarController