@Test
public void removeChangeListener() {

    PropertySource ps = BuildablePropertySource.builder().withName("test").build();
    PropertySourceChangeSupport support = new PropertySourceChangeSupport(ChangeSupport.SUPPORTED, ps);
    BiConsumer<Set<String>, PropertySource> l = mock(BiConsumer.class);
    support.addChangeListener(l);
    support.removeChangeListener(l);
    support.load(Collections.emptyMap());
    verifyNoMoreInteractions(l);
}