docs: public SELF withConfigOption(String key, String value) {
          if (key == null) {
              throw new java.lang.NullPointerException("key marked @NonNull but is null");
          }
          if (value == null) {
              throw new java.lang.NullPointerException("value marked @NonNull but is null");
          }
          options.put(key, value);
          return self();
      }