MongoDB.Driver.TestDocument.TestCopyToCopiesAndOverwritesKeys C# (CSharp) Method

        public void TestCopyToCopiesAndOverwritesKeys()
        {
            Document d = new Document();
            Document dest = new Document();
            dest["two"] = 200;
            d["one"] = 1;
            d.Add("two", 2);
            d["three"] = 3;
            d.CopyTo(dest);
            Assert.AreEqual(2, dest["two"]);
        }