java.lang.NullPointerException
   at org.netbeans.api.java.source.GeneratorUtilities.addImports(GeneratorUtilities.java:615)
   at org.netbeans.modules.java.source.transform.ImmutableTreeTranslator.rewriteChildren(ImmutableTreeTranslator.java:525)
   at org.netbeans.modules.java.source.transform.ImmutableTreeTranslator.visitCompilationUnit(ImmutableTreeTranslator.java:332)
   at org.netbeans.modules.java.source.transform.ImmutableTreeTranslator.visitCompilationUnit(ImmutableTreeTranslator.java:92)
   at com.sun.tools.javac.tree.JCTree$JCCompilationUnit.accept(JCTree.java:490)
   at org.netbeans.modules.java.source.transform.ImmutableTreeTranslator.translate(ImmutableTreeTranslator.java:134)
   at org.netbeans.api.java.source.TreeUtilities$1.translate(TreeUtilities.java:954)
   at org.netbeans.api.java.source.TreeUtilities$1.translate(TreeUtilities.java:952)
   at org.netbeans.api.java.source.TreeUtilities.translate(TreeUtilities.java:963)
   at org.netbeans.api.java.source.WorkingCopy.processCurrentCompilationUnit(WorkingCopy.java:481)
   at org.netbeans.api.java.source.WorkingCopy.getChanges(WorkingCopy.java:630)
   at org.netbeans.api.java.source.JavaSource$1.run(JavaSource.java:670)
   at org.netbeans.api.java.source.JavaSource$1.run(JavaSource.java:656)
   at org.netbeans.api.java.source.JavaSource$MultiTask.run(JavaSource.java:482)
   at org.netbeans.modules.parsing.impl.TaskProcessor.callUserTask(TaskProcessor.java:649)
   at org.netbeans.modules.parsing.api.ParserManager$UserTaskAction.run(ParserManager.java:154)
   at org.netbeans.modules.parsing.api.ParserManager$UserTaskAction.run(ParserManager.java:138)
   at org.netbeans.modules.parsing.impl.TaskProcessor$2.call(TaskProcessor.java:217)
   at org.netbeans.modules.parsing.impl.TaskProcessor$2.call(TaskProcessor.java:214)
   at org.netbeans.modules.masterfs.filebasedfs.utils.FileChangedManager.priorityIO(FileChangedManager.java:168)
   at org.netbeans.modules.masterfs.providers.ProvidedExtensions.priorityIO(ProvidedExtensions.java:356)
   at org.netbeans.modules.parsing.impl.Utilities.runPriorityIO(Utilities.java:71)
   at org.netbeans.modules.parsing.impl.TaskProcessor.runUserTask(TaskProcessor.java:214)
   at org.netbeans.modules.parsing.api.ParserManager.parse(ParserManager.java:106)
   at org.netbeans.api.java.source.JavaSource.runUserActionTaskImpl(JavaSource.java:432)
   at org.netbeans.api.java.source.JavaSource.runUserActionTask(JavaSource.java:403)
   at org.netbeans.api.java.source.JavaSource.runModificationTask(JavaSource.java:678)
   at org.netbeans.modules.websvc.rest.codegen.GenericResourceGenerator.modifyResourceClass(GenericResourceGenerator.java:210)
   at org.netbeans.modules.websvc.rest.codegen.GenericResourceGenerator.generate(GenericResourceGenerator.java:165)
   at org.netbeans.modules.websvc.rest.wizard.PatternResourcesIterator$1.run(PatternResourcesIterator.java:108)
   at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:1424)
   at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:1973)