Response Unmarshaller for ListMetrics operation
Inheritance: XmlResponseUnmarshaller
 public static ListMetricsResponseUnmarshaller GetInstance()
 {
     if (instance == null)
     {
        instance = new ListMetricsResponseUnmarshaller();
     }
     return instance;
 }
 public static ListMetricsResponseUnmarshaller GetInstance()
 {
     if (instance == null)
     {
         instance = new ListMetricsResponseUnmarshaller();
     }
     return(instance);
 }