问如何在Spring重试框架中为第一次重试配置延迟

EN

@Retryable(
        value= CustomException.class,
        backoff = @Backoff(
                delay = 5000,
                multiplier = 2,
                maxDelay = 20000
        )
) 
public void performRetry() throws CustomException {
    try {

        if(RetrySynchronizationManager.getContext().getRetryCount()==0) { // retry count starts from 0.
            logger.info("Starting Retry attempts. Thread name {}. Giving delay of 3 seconds", Thread.currentThread().getName());
            Thread.sleep(3000);
        }

        boolean response = service.execute();  // calling main service

        // Rest of the code

    } catch(Exception e) {
        logger.error("Retry Count {} Error occurred {}", RetrySynchronizationManager.getContext().getRetryCount(), e.getMessage());
        throw new CustomException(e.getMessage());
    }
}