This Bugzilla instance is a read-only archive of historic NetBeans bug reports. To report a bug in NetBeans please follow the project's instructions for reporting issues.
Selecting the option, "NetBeans will generate a subclass of javax.ws.rs.core.Application ..." in the REST Resources Configuration dialog box doesn't generate the subclass at all.
After a reboot and restarting NetBeans it is now creating the subclassed Application