java.lang.NullPointerException
   at org.netbeans.modules.websvc.rest.support.PersistenceHelper.unsetExcludeEnlistedClasses(PersistenceHelper.java:162)
   at org.netbeans.modules.websvc.rest.support.PersistenceHelper.configure(PersistenceHelper.java:150)
   at org.netbeans.modules.websvc.rest.codegen.EntityResourcesGenerator.generate(EntityResourcesGenerator.java:163)
   at org.netbeans.modules.websvc.rest.wizard.EntityResourcesIterator.instantiate(EntityResourcesIterator.java:158)
   at org.openide.loaders.TemplateWizard$InstantiatingIteratorBridge.instantiate(TemplateWizard.java:1051)
   at org.openide.loaders.TemplateWizard.handleInstantiate(TemplateWizard.java:605)
   at org.openide.loaders.TemplateWizard.instantiateNewObjects(TemplateWizard.java:439)
   at org.openide.loaders.TemplateWizardIterImpl.instantiate(TemplateWizardIterImpl.java:253)
   at org.openide.loaders.TemplateWizardIteratorWrapper$ProgressInstantiatingIterator.instantiate(TemplateWizardIteratorWrapper.java:180)
   at org.openide.WizardDescriptor.callInstantiateOpen(WizardDescriptor.java:1626)
   at org.openide.WizardDescriptor.callInstantiate(WizardDescriptor.java:1570)
   at org.openide.WizardDescriptor.access$2300(WizardDescriptor.java:92)
   at org.openide.WizardDescriptor$Listener$2$1.run(WizardDescriptor.java:2257)
   at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:1443)
   at org.netbeans.modules.openide.util.GlobalLookup.execute(GlobalLookup.java:68)
   at org.openide.util.lookup.Lookups.executeWith(Lookups.java:303)
   at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:2058)