docs: public static Forest get(String key) {
  
          KV<String, Forest> kv = AMBIGUITY.get(key);
  
          if (kv == null) {
              if (MyStaticValue.ENV.containsKey(key)) {
                  putIfAbsent(key, MyStaticValue.ENV.get(key));
                  return get(key);
              }
  
              LOG.warn("crf " + key + " not found in config ");
              return null;
          }
  
          Forest sw = kv.getV();
          if (sw == null) {
              try {
                  sw = init(key, kv, false);
              } catch (Exception e) {
              }
          }
          return sw;
      }