Emitting features from weka trainable segmentation

Is there a way via script to emit the image features generated by the weka segmentation plugin?
I am using it programmatically (groovy) and am aware that SaveData or WriteDataToARFF methods can be used to save training data to a file. I am interested in saving features generated for a test image to a file so that they can be used later, and not generate feature gen cost each time, and also try out algos in python.

Thank you in advance,