public void SerializationTest_CollapseId()
        {
            var config = new ApnsHeader.Builder().CollapseId("foo").Build();
            var test   = "{\"apns-collapse-id\":\"foo\"}";
            var actual = JsonConvert.SerializeObject(config, JSON_SETTINGS);

            Assert.AreEqual(test, actual);
        }
        public void SerializationTest_Authorization()
        {
            var config = new ApnsHeader.Builder().Authorization("foo").Build();
            var test   = "{\"authorization\":\"foo\"}";
            var actual = JsonConvert.SerializeObject(config, JSON_SETTINGS);

            Assert.AreEqual(test, actual);
        }