[FBuildPolicy](API\Developer\DerivedDataCache\FBuildPolicy) Transform ( [TFunctionRef](API\Runtime\Core\GenericPlatform\TFunctionRef)< [EBuildPolicy](API\Developer\DerivedDataCache\UE__DerivedData__EBuildPolicy)([EBuildPolicy](API\Developer\DerivedDataCache\UE__DerivedData__EBuildPolicy))> Op ) const