virtual void HandleInputAxis ( class [FEditorViewportClient](API\Editor\UnrealEd\FEditorViewportClient) & ViewportClient, [FViewportActionKeyInput](API\Editor\ViewportInteraction\FViewportActionKeyInput) & Action, const [FKey](API\Runtime\InputCore\FKey) Key, const float Delta, const float DeltaTime, bool & bOutWasHandled )