public void GenerateCollectionItemPath()
        {
            string path = ".Collection";

            Tuple <string, object>[] primaryKeys = new Tuple <string, object>[] { };
            string guid = Guid.NewGuid().ToString();
            string collectionItemPath = U.GenerateCollectionItemPath(path, primaryKeys, guid);

            Assert.IsTrue(collectionItemPath.StartsWith(".Collection["));
            Assert.IsTrue(collectionItemPath.EndsWith("]."));
        }