@Override
    public boolean equals(Object o) {
      if (this == o) return true;
      if (o == null || getClass() != o.getClass()) return false;

      Key key1 = (Key)o;

      if (isMarker != key1.isMarker) return false;
      if (!Objects.equals(key, key1.key)) return false;

      return true;
    }
@Override
    public boolean equals(Object o)