UInterface with a BlueprintNativeEvent, how can I get the "interfaced" AActor's components?

Development Programming & Scripting Blueprint
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1

Hey there, from a UInterface with a BlueprintNativeEvent, how can I get the “interfaced” AActor’s components?

I tried this, but I’m getting weird errors: “LogUObjectArray: Warning: Other object in slot”. Is there a better way?

// .h
UFUNCTION(BlueprintCallable, BlueprintNativeEvent, Category = "Drama")
    UDramaComponent* DramaComponent();
UDramaComponent* DramaComponent_Implementation();

// .cpp
UDramaComponent* IDramaActorInterface::DramaComponent_Implementation()
{
    AActor* OwningActor = Cast<AActor>(_getUObject());  // ???
    if (OwningActor == nullptr) return nullptr;
    return Cast<UDramaComponent>(OwningActor->GetComponentByClass(UDramaComponent::StaticClass()));
}
2

I think the answer is “you can’t”. This might have been possible in previous versions of UE (<4.20?) but now the compiler gives an error that all BlueprintCallable must also be BlueprintImplementableEvents.