public void SetPathKey()
        {
            GetRequestBuilder <int, Greeting> b = new GetRequestBuilder <int, Greeting>(baseUrl);
            Tone tone = new Tone(Tone.Symbol.FRIENDLY);

            b.SetPathKey("key1", "keyValue1");
            b.SetPathKey("key2", 123);
            b.SetPathKey("key3", tone);
            Assert.AreEqual("keyValue1", b.GetPathKey("key1"));
            Assert.AreEqual(123, b.GetPathKey("key2"));
            Assert.AreEqual(tone.symbol, ((Tone)b.GetPathKey("key3")).symbol);
        }