public async Task WhenRetrievingObjectGuidId_HasId()
        {
            var t = new ValidTestObjectGuidId()
            {
                Description = "GuidIdObject", Id = Guid.NewGuid()
            };
            var helper = new AzureFileStorage <ValidTestObjectGuidId>(GetMetaContainer(t.Id.ToString()).Object, id => new byte[0]);

            await helper.TrySaveItemAsync(t);

            var res = await helper.GetMetaItemAsync(t.Id.ToString());

            Assert.AreEqual(t.Id, res.Id);
        }
        public async Task WhenRetrievingObjectGuidId_HasId()
        {
            var t = new ValidTestObjectGuidId() {Description = "GuidIdObject", Id = Guid.NewGuid()};
            var helper = new AzureFileStorage<ValidTestObjectGuidId>(GetMetaContainer(t.Id.ToString()).Object, id => new byte[0]);

            await helper.TrySaveItemAsync(t);

            var res = await helper.GetMetaItemAsync(t.Id.ToString());
            Assert.AreEqual(t.Id, res.Id);
        }