@Override
  public int hashCode()
  {
    return HashCodeBuilder.reflectionHashCode(this);
  }
@Test
  public void testHashCode() {
    PathSpecSet pss1 = PathSpecSet.of(THREE_FIELD_MODEL_FIELD1, THREE_FIELD_MODEL_FIELD2);
    PathSpecSet pss2 = PathSpecSet.of(THREE_FIELD_MODEL_FIELD1, THREE_FIELD_MODEL_FIELD2);
    Assert.assertEquals(pss1.hashCode(), pss2.hashCode());
  }