Possibility to translate target class image to source class image? #45

Let's say the model was trained to translate images between cat, dog, tiger and lions. Given some pig images, the model can translate a cat image as content image to pig.

I wonder if it's possible to do something opposite. Given some pig images that the model never sees, is there a way to translate pig to cat?

In short, is there a way to translate unseen class to seen class?