Install GF V3 TP2.
Create a generic web app (single servlet or just index.jsp), e.g. <New Web
Application> in NetBeans is sufficient.
Deploy it to the server – note that list-applications returns the app with the
key "name <web>" and shows "web" as an engine in the engine list.
Now install update center, run it, and download Metro/Web services bundle.
Restart the server (you may need to redeploy the application as well, can't recall).
Now list-applications will return the app with key "name <>" and empty engine list.
NetBeans tooling requires the engine list to be non-empty to properly identify
the type of a deployed application.