java.lang.NullPointerException
   at com.sun.tools.javac.comp.MemberEnter.getMethodEnv(MemberEnter.java:796)
   at com.sun.tools.javac.api.JavacTrees.getAttrContext(JavacTrees.java:272)
   at com.sun.tools.javac.api.JavacTrees.getScope(JavacTrees.java:192)
   at com.sun.tools.javac.api.JavacTrees.getScope(JavacTrees.java:84)
   at org.netbeans.modules.editor.java.JavaCompletionProvider$JavaCompletionQuery.getEnvImpl(JavaCompletionProvider.java:4380)
   at org.netbeans.modules.editor.java.JavaCompletionProvider$JavaCompletionQuery.getCompletionEnvironment(JavaCompletionProvider.java:4336)
   at org.netbeans.modules.editor.java.JavaCompletionProvider$JavaCompletionQuery.resolveCompletion(JavaCompletionProvider.java:552)
   at org.netbeans.modules.editor.java.JavaCompletionProvider$JavaCompletionQuery.run(JavaCompletionProvider.java:375)
   at org.netbeans.modules.editor.java.JavaCompletionProvider$JavaCompletionQuery$Task.run(JavaCompletionProvider.java:4549)
   at org.netbeans.modules.parsing.api.ParserManager$UserTaskAction.run(ParserManager.java:129)
   at org.netbeans.modules.parsing.api.ParserManager$UserTaskAction.run(ParserManager.java:113)
Caused: org.netbeans.modules.parsing.spi.ParseException
   at org.netbeans.modules.parsing.impl.TaskProcessor.runUserTask(TaskProcessor.java:192)
   at org.netbeans.modules.parsing.impl.TaskProcessor.runWhenScanFinished(TaskProcessor.java:221)
   at org.netbeans.modules.parsing.api.ParserManager.parseWhenScanFinished(ParserManager.java:106)
   at org.netbeans.modules.editor.java.JavaCompletionProvider$JavaCompletionQuery.query(JavaCompletionProvider.java:279)
   at org.netbeans.spi.editor.completion.support.AsyncCompletionTask.run(AsyncCompletionTask.java:218)
   at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:602)
   at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:1084)