@Test
public void testEquals(){

    assertThat(new PropertyValue( "k", "v")).isEqualTo(new PropertyValue( "k", "v"));
    assertThat(new PropertyValue( "k2", "v")).isNotSameAs(new PropertyValue( "k", "v"));
    assertThat(new PropertyValue( "k", "v")).isNotSameAs(new PropertyValue( "k", "v2"));
    assertThat(new PropertyValue( "k", "v")).isNotSameAs(new PropertyValue( "k", "v"));
}