@Override
  public boolean equals(Object obj) {
    if (this == obj) {
      return true;
    }
    if (obj instanceof LazilyParsedNumber) {
      LazilyParsedNumber other = (LazilyParsedNumber) obj;
      return value.equals(other.value);
    }
    return false;
  }
@Test
  public void testEquals() {
    LazilyParsedNumber n1 = new LazilyParsedNumber("1");
    LazilyParsedNumber n1Another = new LazilyParsedNumber("1");
    assertThat(n1.equals(n1Another)).isTrue();
  }