public void ShouldNotMatchSize()
        {
            var doc = new CloudSearchDocument();
            var doc2 = new CloudSearchDocument { id = "some different id"};

            doc.GetSize().ShouldNotEqual(doc2.GetSize());
        }
        public void ShouldMatchSizes()
        {
            var doc = new CloudSearchDocument { id = "some id" };
            var doc2 = new CloudSearchDocument { id = "some id" };

            doc.GetSize().ShouldEqual(doc2.GetSize());
        }