docs: private boolean dumpCache(){
          if (CacheDumpLogger.isDebugEnabled()) {
              try {
                  List<ModelService> services = new ArrayList<ModelService>();
                  services.addAll(getCache().values());
                  StringBuilder sb = new StringBuilder();
                  sb.append("LookupManager dumpped Service Cache at: ").append(System.currentTimeMillis()).append("\n");
                  for (ModelService service : services) {
                      sb.append(new String(serialize(service))).append("\n");
                  }
                  CacheDumpLogger.debug(sb.toString());
              } catch (Exception e) {
                  LOGGER.warn("Dump Service Cache failed. Set Logger {} to INFO to disable this message.",
                              CacheDumpLogger.getName());
                  if (LOGGER.isTraceEnabled()) {
                      LOGGER.trace("Dump Service Cache failed. ", e);
                  }
                  return false;
              }
              return true;
          }
          return false;
  
      }