public RetryPolicyBuilder fixedBackoff(int backoff) {
        this.backoffStrategy = new FixedDelayBackoffStrategy(backoff);
        return this;
    }
Note, this option and {@link #backoffStrategy(BackoffStrategy)} are mutually exclusive settings.

<p>If backoff strategy is not provided, {@link PredefinedRetryPolicies#DEFAULT_BACKOFF_STRATEGY} will be used.</p>

<p>See {@link com.amazonaws.retry.PredefinedBackoffStrategies} for precanned implementations.</p>

@param backoff Fixed delay before each retry attempt.
@return This object for method chaining.
aws-java-sdk-opensdk/src/main/java/com/amazonaws/opensdk/retry/RetryPolicyBuilder.java