public void TestSkipOperator()
        {
            EntityCollection<TestAccountEntity> entities = new EntityCollection<TestAccountEntity>();
            entities.Add(new TestAccountEntity(100, 5));
            entities.Add(new TestAccountEntity(101, 15));
            entities.Add(new TestAccountEntity(102, 8));

            IEnumerable<TestAccountEntity> result = entities.Skip(2);

            Assert.IsNotNull(result);
            foreach (TestAccountEntity entity in result)
            {
                Assert.IsNotNull(entity);
                Console.WriteLine(entity);
            }
        }