[yt-users] getting list of halo IDs for particles from HaloCatalog

I'm trying to retrieve the list of halo IDs for all particles from a HaloCatalog object. I think it is stored in something like "tags" (if I'm correctly reading yt_astro_analysis/halo_finding/halo_objects.py) but the following did *not* work: from yt.extensions.astro_analysis.halo_analysis.api import HaloCatalog data_ds = yt.load(snapname) hc = HaloCatalog(data_ds=data_ds, finder_method='hop') hc.create() fof_tags = hc.tags The error was: AttributeError: 'HaloCatalog' object has no attribute 'tags' Is it possible to access tags somehow? Or is there another way to get the halo ID list? Thanks.