Tree model export

Hi, i'm new to knime. I want to devolop a tree learner and I can't understand how to export the tree model to the predictor node. I checked the decision tree implementation and i've noticed the it uses a PMMLPortObject to store the tree. Because my tree it's not standard and it can't be translated in pmml, is there any alternative way to export it?

  

You could make your own port type?