pass_all_vps option for rlm_python

Hello, I found the not described option `pass_all_vps` for rlm_python module. Is this option intended only for testing? I am asking because neither https://wiki.freeradius.org/modules/Rlm_python page, neither default python config files from `.../raddb/mods-available` does not say anything about this options. I am -- Vladimir