code: def on_backup_primary_disconnected(self, degraded_backups) -> None:
          '''
          The method for sending BackupInstanceFaulty messages
          if backup primary disconnected
          :param degraded_backups: list of backup instances
          ids which performance were degraded
          :return:
          '''
          self.__remove_replicas(degraded_backups,
                                 Suspicions.BACKUP_PRIMARY_DISCONNECTED,
                                 self.node.config.REPLICAS_REMOVING_WITH_PRIMARY_DISCONNECTEDf on_backup_primary_disconnected(self, degraded_backups) -> None:
          '''
          The method for sending BackupInstanceFaulty messages
          if backup primary disconnected
          :param degraded_backups: list of backup instances
          ids which performance were degraded
          :return:
          '''
          self.__remove_replicas(degraded_backups,
                                 Suspicions.BACKUP_PRIMARY_DISCONNECTED,
                                 self.node.config.REPLICAS_REMOVING_WITH_PRIMARY_DISCONNECTED)
docs: The method for sending BackupInstanceFaulty messages
          if backup primary disconnected
          :param degraded_backups: list of backup instances
          ids which performance were degraded
          :return: