code: def _validate_required_class_vars(self):
          
          required_members = (
              'significant_kwargs',
              'herd_avoidance_timeout',
          )
          for required_member in required_members:
              if not hasattr(self, required_member):
                  raise Exception(
                      "JobtasticTask's must define a %s" % required_member)
docs: Ensure that this subclass has defined all of the required class
          variables.