public void IntersectWithTest2()
{
var bag = new HashBag <int> {
3, 5, 1, 4, 6, 2, 3, 5, 1, 4, 6, 2
};
var l = new List <int> {
1, 1, 2, 3, 3, 4, 5, 7, 8, 9
};
bag.IntersectWith(l);
Assert.Equal(new[] { 3, 3, 5, 1, 1, 4, 2 }, bag);
}
