@Override
  public int hashCode() {
    return value.hashCode();
  }
@Test
  public void testHashCode() {
    LazilyParsedNumber n1 = new LazilyParsedNumber("1");
    LazilyParsedNumber n1Another = new LazilyParsedNumber("1");
    assertThat(n1Another.hashCode()).isEqualTo(n1.hashCode());
  }