* BAEL-2988 Move the code from spring-rest-simple to spring-mvc-simple-2, based on the review feedback.
* BAEL-2988 revert previous changes in the spring-rest-simple
* BAEL-2988 Using Enums as Request Parameters in Spring
* Remove the unused annotation based on PR feedback
* Simplify code based on the PR feedback
* Make the methods consistent with the article.