@Deprecated
    protected boolean isRetriableException(Throwable e) {
        if (getRetryHandler() != null) {
            return getRetryHandler().isRetriableException(e, true);
        } 
        return false;
    }
Determine if operation can be retried if an exception is thrown. For example, connect 
timeout related exceptions
are typically retriable.
ribbon-loadbalancer/src/main/java/com/netflix/client/AbstractLoadBalancerAwareClient.java