docs: private DbOperation hasOptimisticLockingException(List<DbOperation> operationsToFlush, Throwable cause) {
  
      BatchExecutorException batchExecutorException = ExceptionUtil.findBatchExecutorException(cause);
  
      if (batchExecutorException != null) {
  
        int failedOperationIndex = batchExecutorException.getSuccessfulBatchResults().size();
        if (failedOperationIndex < operationsToFlush.size()) {
          DbOperation failedOperation = operationsToFlush.get(failedOperationIndex);
          if (isOptimisticLockingException(failedOperation, cause)) {
            return failedOperation;
          }
        }
      }
  
      return null;
    }