@Test
public final void testGetStatementGroup() {

	Statement s = factory.getStatement(
			factory.getItemIdValue("Q42", "foo"),
			factory.getNoValueSnak(factory.getPropertyIdValue("P42", "foo")),
			Collections.emptyList(), Collections.emptyList(),
			StatementRank.NORMAL, "MyId");
	StatementGroup o1 = new StatementGroupImpl(Collections.singletonList(s));
	StatementGroup o2 = factory.getStatementGroup(Collections.singletonList(s));
	assertEquals(o1, o2);
}