public void AddRange_AppendsList()
{
var blist1 = new BList {
"item1", "item2"
};
var blist2 = new BList {
"item3", "item4"
};
blist1.AddRange(blist2);
blist1.Should().HaveCount(4);
blist1.Should().ContainInOrder((BString)"item1", (BString)"item2", (BString)"item3", (BString)"item4");
}