public void TestXmlRepository()
        {
            var repository = new XmlRepository(@"..\..\TestXmlRepository\Repository.xml");

            var save = repository.SaveItem(_serialisableClass);

            Assert.IsTrue(save);

            var get = repository.GetItem(_serialisableClass);

            Assert.AreEqual(get, _serialisableClass);

            var items = repository.ReadItems<TestClass>();

            Assert.IsTrue(items.Count > 0);

            var delete = repository.DeleteItem(_serialisableClass);

            Assert.IsTrue(delete);

            var missing = repository.GetItem(_serialisableClass);

            Assert.IsNull(missing);
        }