docs: @SuppressWarnings("deprecation")
          public EVCache build() {
              if (_poolManager == null) {
                  _poolManager = EVCacheClientPoolManager.getInstance();
                  if (logger.isDebugEnabled()) logger.debug("_poolManager - " + _poolManager + " through getInstance");
              }
  
              if (_appName == null) {
                  throw new IllegalArgumentException("param appName cannot be null.");
              }
  
              customize();
  
              return new EVCacheImpl(
                  _appName, _cachePrefix, _ttl, _transcoder, _serverGroupRetry, _enableExceptionThrowing, _poolManager);
          }