selected = DBRefUtils.selectRefs(dbrefs, sources);
assertEquals(2, selected.length);
assertSame(ref2, selected[0]);
assertSame(ref3, selected[1]);
selected = DBRefUtils.selectRefs(dbrefs, sources);
assertEquals(2, selected.length);
assertSame(ref2, selected[0]);
assertSame(ref3, selected[1]);