Getting Secondary Sources IDs

[mimranh]

First thanks for the pyroomacoustics, it is really a useful tool
My question is that can I get IS (SS = secondary sources) IDs such as
IS_1, IS_23, IS_324 etc.
and sorted according to their distances from the receivers?

Here the index in IS_324 means that the it is a third order image source and is coming from source to third wall then hits the second wall and the hits the fourth wall and finally reach the receiver.

thanks