@Test
public void getValues() {

    ObjectValue ov = PropertyValue.createObject();
    ov.addList("k1");
    ov.addList("k2");
    ov.addObject("k3");
    ov.setValue("k4", "v");
    Collection<PropertyValue> values = ov.getValues();
    assertThat(values).isNotNull().hasSize(4);
}