code: def fw_retry_failures_delete(self):
          
          for tenant_id in self.fwid_attr:
              try:
                  with self.fwid_attr[tenant_id].mutex_lock:
                      # For both create and delete case
                      fw_data = self.get_fw_by_tenant_id(tenant_id)
                      if fw_data is None:
                          LOG.info("No FW for tenant %s", tenant_id)
                          continue
                      result = fw_data.get('result').split('(')[0]
                      if result == fw_constants.RESULT_FW_DELETE_INIT:
                          fw_dict = self.fwid_attr[tenant_id].get_fw_dict()
                          # This means a restart has happened before the FW is
                          # completely deleted
                          if not fw_dict:
                              # Need to fill fw_dict from fw_data
                              fw_dict = self.fill_fw_dict_from_db(fw_data)
                          self.retry_failure_fab_dev_delete(tenant_id, fw_data,
                                                            fw_dict)
              except Exception as exc:
                  LOG.error("Exception in retry failure delete %s",
                            str(exc))
docs: This routine is called for retrying the delete cases.