@Test
public final void testGetSnakGroup() {

	Snak s = factory.getNoValueSnak(factory
			.getPropertyIdValue("P42", "foo"));
	SnakGroup o1 = Datamodel.makeSnakGroup(Collections
			.singletonList(s));
	SnakGroup o2 = factory
			.getSnakGroup(Collections.singletonList(s));
	assertEquals(o1, o2);
}