@Test
public void shouldCompareEqualityOfEmptyValueCollection() {

    Collection<String> collection = multimap.get(keys[0]);
    assertNotEquals(this, collection);
    assertNotEquals(collection, this);
    if (collection instanceof List<?>) {
        assertEquals(Collections.emptyList(), collection);
        assertEquals(collection, Collections.emptyList());
    } else if (collection instanceof Set<?>) {
        assertEquals(Collections.emptySet(), collection);
        assertEquals(collection, Collections.emptySet());
    }
}