I react on the Java EE & Hibernate HOWTO at
http://www.netbeans.org/kb/articles/hibernate-javaee.html .
By the end of the page, there is a header: "Coding the JSF Interface".
In point 3), there is such advice:

-----------------------
To make this application work correctly, we need to make some changes to
CustomerController.java and DiscountCodeController.java. [...]

EntityManager em = getEntityManager();
        try {
            utx.begin();

Modify the code in each of the methods to change the order in which we get the
entity manager.

EntityManager em = null;
        try {
            utx.begin();
            em = getEntityManager();
-----------------------

Why the code is not generated that way? It's a single-purpose generator and
every controller class code generated by it must be edited in three methods. So
I guess it should be modified in the "template".

Thanks, Ondra

(This is my first issue report, so please excuse me if this is bogus in some
way. I was adviced to report this by a more skillful NetBeans user).