public async Task Projection_NotExists_TestMethod()
        {
            bool expected = false;
            bool actual   = true;

            TableEventStreamReader testReader = new TableEventStreamReader(
                new EventStreamAttribute("Domain Test", "Entity Type Test", "Instance is not existing abc.def"),
                "RetailBank");

            ProjectionProcessor testObj = new ProjectionProcessor(testReader);

            actual = await testObj.Exists();

            Assert.AreEqual(expected, actual);
        }
        public async Task Projection_Exists_TestMethod()
        {
            bool expected = true;
            bool actual   = false;

            TableEventStreamReader testReader = new TableEventStreamReader(
                new EventStreamAttribute("Bank", "Account", "Instance 1234"),
                "RetailBank");

            ProjectionProcessor testObj = new ProjectionProcessor(testReader);

            actual = await testObj.Exists();

            Assert.AreEqual(expected, actual);
        }