code: def prep_rg_names(item, config, fc_name, fc_date):
      
      if fc_name and fc_date:
          lane_name = "%s_%s_%s" % (item["lane"], fc_date, fc_name)
      else:
          lane_name = item["description"]
      return {"rg": item["description"],
              "sample": item["description"],
              "lane": lane_name,
              "pl": (tz.get_in(["algorithm", "platform"], item)
                     or tz.get_in(["algorithm", "platform"], item, "illumina")).lower(),
              "lb": tz.get_in(["metadata", "library"], item),
              "pu": tz.get_in(["metadata", "platform_unit"], item) or lane_name}
docs: Generate read group names from item inputs.