java.lang.NullPointerException
   at com.sun.tools.javac.code.Types.isSignaturePolymorphic(Types.java:1072)
   at com.sun.tools.javac.jvm.ClassReader.readMethod(ClassReader.java:2039)
   at com.sun.tools.javac.jvm.ClassReader.readClass(ClassReader.java:2255)
   at com.sun.tools.javac.jvm.ClassReader.readClassFile(ClassReader.java:2327)
   at com.sun.tools.javac.jvm.ClassReader.fillIn(ClassReader.java:2548)
   at com.sun.tools.javac.jvm.ClassReader.complete(ClassReader.java:2468)
   at com.sun.tools.javac.jvm.ClassReader.access$000(ClassReader.java:77)
   at com.sun.tools.javac.jvm.ClassReader$1.complete(ClassReader.java:248)
   at com.sun.tools.javac.code.Symbol.complete(Symbol.java:563)
   at com.sun.tools.javac.code.Symbol$ClassSymbol.complete(Symbol.java:1040)
   at com.sun.tools.javac.jvm.ClassReader.loadClass(ClassReader.java:2662)
   at com.sun.tools.javac.comp.Resolve.loadClass(Resolve.java:1872)
   at com.sun.tools.javac.comp.Resolve.findIdentInPackage(Resolve.java:2118)
   at com.sun.tools.javac.comp.Attr.selectSym(Attr.java:3514)
   at com.sun.tools.javac.comp.Attr.visitSelect(Attr.java:3414)
   at com.sun.tools.javac.tree.JCTree$JCFieldAccess.accept(JCTree.java:1897)
   at com.sun.tools.javac.comp.Attr.attribTree(Attr.java:602)
   at com.sun.tools.javac.comp.Attr.attribType(Attr.java:664)
   at com.sun.tools.javac.comp.Attr.attribType(Attr.java:657)
   at com.sun.tools.javac.comp.MemberEnter.visitVarDef(MemberEnter.java:847)
   at com.sun.tools.javadoc.JavadocMemberEnter.visitVarDef(JavadocMemberEnter.java:88)
   at org.netbeans.lib.nbjavac.services.NBJavadocMemberEnter.visitVarDef(NBJavadocMemberEnter.java:90)
   at com.sun.tools.javac.tree.JCTree$JCVariableDecl.accept(JCTree.java:852)
   at com.sun.tools.javac.comp.MemberEnter.memberEnter(MemberEnter.java:459)
   at com.sun.tools.javac.comp.MemberEnter.memberEnter(MemberEnter.java:471)
   at com.sun.tools.javac.comp.MemberEnter.finishClass(MemberEnter.java:485)
   at com.sun.tools.javac.comp.MemberEnter.finish(MemberEnter.java:1660)
   at com.sun.tools.javac.comp.MemberEnter.complete(MemberEnter.java:1455)
   at com.sun.tools.javac.code.Symbol.complete(Symbol.java:563)
   at com.sun.tools.javac.code.Symbol$ClassSymbol.complete(Symbol.java:1040)
   at com.sun.tools.javac.comp.Enter.complete(Enter.java:730)
   at com.sun.tools.javac.main.JavaCompiler.complete(JavaCompiler.java:1063)
   at com.sun.tools.javac.main.JavaCompiler.enterTrees(JavaCompiler.java:1025)
   at com.sun.tools.javac.api.JavacTaskImpl.enter(JavacTaskImpl.java:370)
   at org.netbeans.modules.java.source.TreeLoader.loadTreeFor(TreeLoader.java:191)
   at com.sun.tools.javac.code.Symbol$ParamSymbol.getSimpleName(Symbol.java:1341)
   at com.sun.tools.javac.code.Symbol$ParamSymbol.getSimpleName(Symbol.java:1308)
   at org.netbeans.modules.editor.java.JavaCompletionItem$MethodItem.<init>(JavaCompletionItem.java:1565)
   at org.netbeans.modules.editor.java.JavaCompletionItem$MethodItem.<init>(JavaCompletionItem.java:1516)
   at org.netbeans.modules.editor.java.JavaCompletionItem.createExecutableItem(JavaCompletionItem.java:193)
   at org.netbeans.modules.editor.java.JavaCompletionItemFactory$DefaultImpl.createExecutableItem(JavaCompletionItemFactory.java:138)
   at org.netbeans.modules.editor.java.JavaCompletionProvider$JavaCompletionQuery.addMembers(JavaCompletionProvider.java:3496)
   at org.netbeans.modules.editor.java.JavaCompletionProvider$JavaCompletionQuery.insideMemberSelect(JavaCompletionProvider.java:1857)
   at org.netbeans.modules.editor.java.JavaCompletionProvider$JavaCompletionQuery.resolveCompletion(JavaCompletionProvider.java:694)
   at org.netbeans.modules.editor.java.JavaCompletionProvider$JavaCompletionQuery.run(JavaCompletionProvider.java:448)
   at org.netbeans.modules.editor.java.JavaCompletionProvider$JavaCompletionQuery$Task.run(JavaCompletionProvider.java:5898)
   at org.netbeans.modules.parsing.impl.TaskProcessor.callUserTask(TaskProcessor.java:598)
   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)