public void Values()
{
var dict = new ListMultiDictionary <int, int> {
[3] = new[] { 1, 2, 3 }, [4] = new[] { 1 }
};
var vals = dict.Values;
Assert.IsTrue(vals.Contains(new[] { 1, 2, 3 }, Enumerables.SequenceEqualityComparer <int>()));
Assert.IsTrue(vals.Contains(new[] { 1 }, Enumerables.SequenceEqualityComparer <int>()));
Assert.AreEqual(2, vals.Count);
}
