@Override
  public boolean equals(Object o) {
    if (this == o) return true;
    if (o == null || getClass() != o.getClass()) return false;
    OneKeyFMap<?, ?> map = (OneKeyFMap<?, ?>)o;
    return myKey.equals(map.myKey) && myValue.equals(map.myValue);
  }
@Override
  public boolean equals(Object o)