java.lang.NullPointerException
        at org.netbeans.modules.websvc.rest.codegen.EntityResourcesGenerator$1.run(EntityResourcesGenerator.java:348)
        at org.netbeans.modules.websvc.rest.codegen.EntityResourcesGenerator$1.run(EntityResourcesGenerator.java:345)
        at org.netbeans.api.java.source.JavaSource.runModificationTask(JavaSource.java:953)
        at org.netbeans.modules.websvc.rest.codegen.EntityResourcesGenerator.generatePersistenceService(EntityResourcesGenerator.java:343)
        at org.netbeans.modules.websvc.rest.codegen.EntityResourcesGenerator.generate(EntityResourcesGenerator.java:267)
        at org.netbeans.modules.websvc.rest.wizard.fromdb.DatabaseResourceWizardIterator$3.run(DatabaseResourceWizardIterator.java:248)
        at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:572)
        at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:997)