static [UAsyncRegisterAndExecuteTask](API\Editor\Blutility\UAsyncRegisterAndExecuteTask) * RegisterAndExecuteTask ( [UEditorUtilityTask](API\Editor\Blutility\UEditorUtilityTask) * Task, [UEditorUtilityTask](API\Editor\Blutility\UEditorUtilityTask) * OptionalParentTask )