Questions on using labels or not

Hi author, first, great work.

I have a question after I read your codes.
You mentioned in the paper that your point cloud segmentation is unsupervised, why I find using labels from label path in the codes, e.g., in "process_semantickitti.py".

In other words, if we have point cloud data without labels, can the codes run successfully since there is no label path?

Thx.