docs: def has_completed(self):
          """Return True if workflow is fully completed."""
          objects_in_db = WorkflowObjectModel.query.filter(
              WorkflowObjectModel.id_workflow == self.uuid,
              WorkflowObjectModel.id_parent == None,  # noqa
          ).filter(WorkflowObjectModel.status.in_([
              workflow_object_class.known_statuses.COMPLETED
          ])).count()
          return objects_in_db == len(list(self.objects))