renaming `channel_get_descendants` to `channel_descendants`
renaming `channel_get_descendants` to `channel_descendants`

williamroot/opps,jeanmask/opps,YACOWS/opps,opps/opps,opps/opps,jeanmask/opps,YACOWS/opps,opps/opps,williamroot/opps,jeanmask/opps,williamroot/opps,opps/opps,williamroot/opps,YACOWS/opps,jeanmask/opps,YACOWS/opps