virtual [FTabSpawnerEntry](API\Runtime\Slate\Framework\Docking\FTabSpawnerEntry) & RegisterTabSpawner ( [TSharedRef](API\Runtime\Core\Templates\TSharedRef)< [FTabManager](API\Runtime\Slate\Framework\Docking\FTabManager) > TabManager, const [FApplicationMode](API\Editor\UnrealEd\WorkflowOrientedApp\FApplicationMode) * CurrentApplicationMode ) const