@Path("registerclassesthrows1")
public String registerClassesThrowsNpe1(@QueryParam("stage") String stage) {
AsyncResponse async = takeAsyncResponse(stage);
try {
Class<SettingCompletionCallback> callback = null;
async.register(callback, SecondSettingCompletionCallback.class);
} catch (NullPointerException e) {
return TRUE;
} catch (Exception e) {
return "Threw " + e.getClass().getName();
}