public void HKS_MakeKey()
        {
            //string testName = TestContext.TestName;

            var keys = new[]
            {
                Tuple.Create("One", "1"),
                Tuple.Create("Two", "2")
            }.ToList();

            string keyStr = HierarchicalKeyStore.MakeStoreKey(keys);

            Assert.Equal("One=1+Two=2", keyStr); // Output from MakeStoreKey
        }