docs: public static Forest get(String key) {
  
          KV<String, Forest> kv = DIC.get(key);
  
          if (kv == null) {
              if (MyStaticValue.ENV.containsKey(key)) {
                  putIfAbsent(key, MyStaticValue.ENV.get(key));
                  return get(key);
              }
              LOG.warn("dic " + key + " not found in config ");
              return null;
          }
          Forest forest = kv.getV();
          if (forest == null) {
              forest = init(key, kv, false);
          }
          return forest;
  
      }