public void CheckConditionalUpdate(Guid entityTag)
        {
            string validEtag = OutgoingWebResponseContext.GenerateValidEtag(entityTag);

            CheckConditionalUpdateWithValidatedEtag(validEtag);
        }
        public void CheckConditionalRetrieve(long entityTag)
        {
            string validEtag = OutgoingWebResponseContext.GenerateValidEtag(entityTag);

            CheckConditionalRetrieveWithValidatedEtag(validEtag);
        }