public void setMaxRetryMillis(long maxRetryMillis) {
		if (maxRetryMillis > 0) {
			this.maxRetryMillis = maxRetryMillis;
		} else {
			this.maxRetryMillis = 500;
		}
	}
Given that
{@link IRule} can be cascaded, this {@link RetryRule} class allows adding a retry logic to an existing Rule.

@author stonse
ribbon-loadbalancer/src/main/java/com/netflix/loadbalancer/RetryRule.java