er some data (eg, the data in the forms),
            and such data does not need to be kept
            for the whole interactions/session with the user.
            So, every time we clich the plus button, a new counter bean with value 0 is created and used.
            On the other hand, the SessionScoped instance is always the same. It is more expensive,
            as we keep in memory one instance per user.
            <em>But how does Wildfly know that a request comes from the same user session???</e