Non-public BlueprintCallable function calls do not compile in a nativized Blueprint.

A nativized Blueprint cannot currently invoke a non-public BlueprintCallable function that's defined in native C++ code without resulting in a C++ compile error.

Example: APlayerController::PlayDynamicForceFeedback()

Current workaround: Locally modify the native class declaration to move the BlueprintCallable function into a "public" section.

1. Create a new (blank) Blueprint-only project.
2. Add a new Actor-based Blueprint class.
3. Double-click to open the new Blueprint in the editor.
4. Switch to the Event Graph tab.
5. Right-click next to the BeginPlay event and choose "Get Player Controller."
6. Drag off the GetPlayerController node's return value pin and choose "Play Dynamic Force Feedback"
7. Connect the "Start" pin to the BeginPlay event's exec pin.
8. Compile and save the Blueprint class.
9. Drag a new instance into the Untitled map and save (NewMap).
10. In Project settings, set the default game map to 'NewMap' and set Blueprint nativization to "Inclusive."
11. Choose File->Package Project->Windows->Win64 and choose a location, then wait for packaging to complete.
12. An error will result during the build that follows the cook step:

    UATHelper: Packaging (Windows (64-bit)):     D:/dev/local/Projects/NatPrivateTest/Intermediate/Plugins/NativizedAssets/Windows/Game/Source/NativizedAssets/Private/NewBlueprint__pf1010915279.cpp(477): error C2248: 'APlayerController::PlayDynamicForceFeedback': cannot access private member declared in class 'APlayerController'
    UATHelper: Packaging (Windows (64-bit)):     D:\dev\UE4\Dev-Framework\Engine\Source\Runtime\Engine\Classes\GameFramework/PlayerController.h(1088): note: see declaration of 'APlayerController::PlayDynamicForceFeedback'
    UATHelper: Packaging (Windows (64-bit)):     D:\dev\UE4\Dev-Framework\Engine\Source\Runtime/Engine/Classes/Matinee/MatineeActor.h(13): note: see declaration of 'APlayerController'