docs: private boolean dumpCache() throws Exception{
  
          if(CacheDumpLogger.isDebugEnabled()){
  
              List<ModelService> services = getCache().getAllServicesWithInstance();
               if(dumper == null){
                   dumper = new JsonSerializer();
               }
  
              StringBuilder sb = new StringBuilder();
              sb.append("LookupManager dump Service Cache at: ").append(System.currentTimeMillis()).append("\n");
              for(ModelService service : services){
                  sb.append(new String(dumper.serialize(service))).append("\n");
              }
              CacheDumpLogger.debug(sb.toString());
              return true;
          } else {
              return false;
          }
      }