@Override
    public boolean isCircuitTrippingException(Throwable e) {
        return Utils.isPresentAsCause(e, getCircuitRelatedExceptions());        
    }
@return true if {@link SocketException} or {@link SocketTimeoutException} is a cause in the Throwable.
ribbon-core/src/main/java/com/netflix/client/DefaultLoadBalancerRetryHandler.java