java.lang.NullPointerException
   at com.sun.tools.javac.comp.Check.checkMethod(Check.java:879)
   at com.sun.tools.javac.comp.Attr.checkMethod(Attr.java:3968)
   at com.sun.tools.javac.comp.Attr.checkIdInternal(Attr.java:3740)
   at com.sun.tools.javac.comp.Attr.checkMethodIdInternal(Attr.java:3651)
   at com.sun.tools.javac.comp.Attr.checkMethodId(Attr.java:3624)
   at com.sun.tools.javac.comp.Attr.checkId(Attr.java:3612)
   at com.sun.tools.javac.comp.Attr.visitNewClass(Attr.java:2125)
   at com.sun.tools.javac.tree.JCTree$JCNewClass.accept(JCTree.java:1516)
   at com.sun.tools.javac.comp.Attr.attribTree(Attr.java:602)
   at com.sun.tools.javac.comp.DeferredAttr.attribSpeculative(DeferredAttr.java:372)
   at com.sun.tools.javac.comp.Attr.findDiamond(Attr.java:2291)
   at com.sun.tools.javac.comp.Attr.visitNewClass(Attr.java:2165)
   at com.sun.tools.javac.tree.JCTree$JCNewClass.accept(JCTree.java:1516)
   at com.sun.tools.javac.comp.Attr.attribTree(Attr.java:602)
   at com.sun.tools.javac.comp.Attr.visitReturn(Attr.java:1724)
   at com.sun.tools.javac.tree.JCTree$JCReturn.accept(JCTree.java:1384)
   at com.sun.tools.javac.comp.Attr.attribTree(Attr.java:602)
   at com.sun.tools.javac.comp.Attr.attribStat(Attr.java:671)
   at com.sun.tools.javac.comp.Attr.attribStats(Attr.java:687)
   at com.sun.tools.javac.comp.Attr.visitBlock(Attr.java:1152)
   at org.netbeans.lib.nbjavac.services.NBAttr.visitBlock(NBAttr.java:82)
   at com.sun.tools.javac.tree.JCTree$JCBlock.accept(JCTree.java:909)
   at com.sun.tools.javac.comp.Attr.attribTree(Attr.java:602)
   at com.sun.tools.javac.comp.Attr.attribStat(Attr.java:671)
   at com.sun.tools.javac.comp.Attr.attribStatToTree(Attr.java:471)
   at com.sun.tools.javac.api.JavacTaskImpl.attributeTreeTo(JavacTaskImpl.java:778)
   at org.netbeans.api.java.source.TreeUtilities.reattributeTreeTo(TreeUtilities.java:702)
   at org.netbeans.modules.editor.java.JavaCompletionProvider$JavaCompletionQuery.getEnvImpl(JavaCompletionProvider.java:5632)
   at org.netbeans.modules.editor.java.JavaCompletionProvider$JavaCompletionQuery.getCompletionEnvironment(JavaCompletionProvider.java:5552)
   at org.netbeans.modules.editor.java.JavaCompletionProvider$JavaCompletionQuery.resolveToolTip(JavaCompletionProvider.java:464)
   at org.netbeans.modules.editor.java.JavaCompletionProvider$JavaCompletionQuery.run(JavaCompletionProvider.java:452)
   at org.netbeans.modules.editor.java.JavaCompletionProvider$JavaCompletionQuery$Task.run(JavaCompletionProvider.java:5886)
   at org.netbeans.modules.parsing.impl.TaskProcessor.callUserTask(TaskProcessor.java:593)
   at org.netbeans.modules.parsing.api.ParserManager$UserTaskAction.run(ParserManager.java:155)
   at org.netbeans.modules.parsing.api.ParserManager$UserTaskAction.run(ParserManager.java:139)
   at org.netbeans.modules.parsing.impl.TaskProcessor$2.call(TaskProcessor.java:206)
   at org.netbeans.modules.parsing.impl.TaskProcessor$2.call(TaskProcessor.java:203)
   at org.netbeans.modules.masterfs.filebasedfs.utils.FileChangedManager.priorityIO(FileChangedManager.java:176)
   at org.netbeans.modules.masterfs.providers.ProvidedExtensions.priorityIO(ProvidedExtensions.java:360)
   at org.netbeans.modules.parsing.impl.Utilities.runPriorityIO(Utilities.java:74)
Caused: org.netbeans.modules.parsing.spi.ParseException
   at org.netbeans.modules.parsing.impl.TaskProcessor.runUserTask(TaskProcessor.java:211)
   at org.netbeans.modules.parsing.api.ParserManager.parse(ParserManager.java:106)
   at org.netbeans.modules.editor.java.JavaCompletionProvider$JavaCompletionQuery.query(JavaCompletionProvider.java:320)
   at org.netbeans.spi.editor.completion.support.AsyncCompletionTask.run(AsyncCompletionTask.java:223)
   at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:1423)
   at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:2033)