@Monitor(name=PREFIX + "ActiveRequestsCount", type = DataSourceType.INFORMATIONAL)    
    public int getActiveRequestsCount() {
        return loadBalancerStats.getActiveRequestsCount(zone);
    }
Class that stores Statistics per Zone (where Zone is typically a Amazon
Availability Zone)

@author awang

@param <T>
ribbon-loadbalancer/src/main/java/com/netflix/loadbalancer/ZoneStats.java