java.lang.AssertionError: isSameType UNKNOWN
   at com.sun.tools.javac.code.Types$SameTypeVisitor.visitType(Types.java:1122)
   at com.sun.tools.javac.code.Types$SameTypeVisitor.visitType(Types.java:1094)
   at com.sun.tools.javac.code.Type.accept(Type.java:174)
   at com.sun.tools.javac.code.Types$DefaultTypeVisitor.visit(Types.java:4430)
   at com.sun.tools.javac.code.Types.isSameType(Types.java:1086)
   at com.sun.tools.javac.code.Types.isSameType(Types.java:1083)
   at com.sun.tools.javac.comp.MemberEnter.visitVarDef(MemberEnter.java:889)
   at com.sun.tools.javadoc.JavadocMemberEnter.visitVarDef(JavadocMemberEnter.java:88)
   at org.netbeans.lib.nbjavac.services.NBJavadocMemberEnter.visitVarDef(NBJavadocMemberEnter.java:90)
   at com.sun.tools.javac.tree.JCTree$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$ClassSymbol.complete(Symbol.java:1040)
   at com.sun.tools.javac.comp.Attr.visitClassDef(Attr.java:873)
   at org.netbeans.lib.nbjavac.services.NBAttr.visitClassDef(NBAttr.java:70)
   at com.sun.tools.javac.tree.JCTree$JCClassDecl.accept(JCTree.java:692)
   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.visitNewClass(Attr.java:2210)
   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$JCBlock.accept(JCTree.java:909)
   at com.sun.tools.javac.comp.Attr.attribTree(Attr.java:602)
   at com.sun.tools.javac.comp.Attr.attribStat(Attr.java:671)
   at com.sun.tools.javac.comp.Attr.visitMethodDef(Attr.java:1040)
   at org.netbeans.lib.nbjavac.services.NBAttr.visitMethodDef(NBAttr.java:76)
   at com.sun.tools.javac.tree.JCTree$JCMethodDecl.accept(JCTree.java:778)
   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.attribClassBody(Attr.java:4481)
   at com.sun.tools.javac.comp.Attr.attribClass(Attr.java:4383)
   at com.sun.tools.javac.comp.Attr.attribClass(Attr.java:4316)
   at com.sun.tools.javac.comp.Attr.attrib(Attr.java:4291)
   at com.sun.tools.javac.main.JavaCompiler.attribute(JavaCompiler.java:1314)
   at com.sun.tools.javac.api.JavacTaskImpl$1.process(JavacTaskImpl.java:473)
   at com.sun.tools.javac.api.JavacTaskImpl$Filter.run(JavacTaskImpl.java:623)
   at com.sun.tools.javac.api.JavacTaskImpl.analyze(JavacTaskImpl.java:476)
   at org.netbeans.modules.java.source.TreeLoader.loadTreeFor(TreeLoader.java:183)
   at com.sun.tools.javac.model.JavacElements.getTreeAndTopLevel(JavacElements.java:588)
   at com.sun.tools.javac.model.JavacElements.getTreeAndTopLevel(JavacElements.java:614)
   at com.sun.tools.javac.api.JavacTrees.getTree(JavacTrees.java:310)
   at com.sun.tools.javac.api.JavacTrees.getTree(JavacTrees.java:306)
   at com.sun.tools.javac.api.JavacTrees.getTree(JavacTrees.java:302)
   at com.sun.tools.javac.api.JavacTrees.getTree(JavacTrees.java:124)
   at org.netbeans.modules.java.editor.overridden.ComputeAnnotations.createAnnotations(ComputeAnnotations.java:137)
   at org.netbeans.modules.java.editor.overridden.ComputeAnnotations.computeAnnotations(ComputeAnnotations.java:126)
   at org.netbeans.modules.java.editor.overridden.ComputeAnnotations.run(ComputeAnnotations.java:108)
   at org.netbeans.modules.parsing.impl.TaskProcessor.callParserResultTask(TaskProcessor.java:568)
   at org.netbeans.modules.parsing.impl.TaskProcessor$CompilationJob.run(TaskProcessor.java:744)
   at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)
   at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:334)
   at java.util.concurrent.FutureTask.run(FutureTask.java:166)
   at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:1423)
   at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:2033)