code: def _tasks_status(set_tasks):
      
      if set_tasks["ever_failed"]:
          if not set_tasks["failed"]:
              return LuigiStatusCode.SUCCESS_WITH_RETRY
          else:
              if set_tasks["scheduling_error"]:
                  return LuigiStatusCode.FAILED_AND_SCHEDULING_FAILED
              return LuigiStatusCode.FAILED
      elif set_tasks["scheduling_error"]:
          return LuigiStatusCode.SCHEDULING_FAILED
      elif set_tasks["not_run"]:
          return LuigiStatusCode.NOT_RUN
      elif set_tasks["still_pending_ext"]:
          return LuigiStatusCode.MISSING_EXT
      else:
          return LuigiStatusCode.SUCCESS
docs: Given a grouped set of tasks, returns a LuigiStatusCode