java.lang.AssertionError: isSubtype METHOD at com.sun.tools.javac.code.Types$4.visitType(Types.java:1031) at com.sun.tools.javac.code.Types$4.visitType(Types.java:1007) at com.sun.tools.javac.code.Types$DefaultTypeVisitor.visitMethodType(Types.java:4703) at com.sun.tools.javac.code.Type$MethodType.accept(Type.java:1459) at com.sun.tools.javac.code.Types$DefaultTypeVisitor.visit(Types.java:4699) at com.sun.tools.javac.code.Types.isSubtype(Types.java:1003) at com.sun.tools.javac.code.Types.isSubtype(Types.java:974) at com.sun.tools.javac.code.Types.isSubtypeUncheckedInternal(Types.java:929) at com.sun.tools.javac.code.Types.isSubtypeUnchecked(Types.java:915) at com.sun.tools.javac.comp.Resolve$MethodCheckContext.compatible(Resolve.java:980) at com.sun.tools.javac.comp.Check.checkType(Check.java:571) at com.sun.tools.javac.comp.Attr$ResultInfo.check(Attr.java:500) at com.sun.tools.javac.comp.Resolve$MethodResultInfo.check(Resolve.java:1028) at com.sun.tools.javac.comp.Resolve$4.checkArg(Resolve.java:843) at com.sun.tools.javac.comp.Resolve$AbstractMethodCheck.argumentsAcceptable(Resolve.java:748) at com.sun.tools.javac.comp.Resolve$4.argumentsAcceptable(Resolve.java:852) at com.sun.tools.javac.comp.Resolve.rawInstantiate(Resolve.java:592) at com.sun.tools.javac.comp.Resolve.selectBest(Resolve.java:1478) at com.sun.tools.javac.comp.Resolve.findMethodInScope(Resolve.java:1659) at com.sun.tools.javac.comp.Resolve.findMethod(Resolve.java:1728) at com.sun.tools.javac.comp.Resolve.findMethod(Resolve.java:1702) at com.sun.tools.javac.comp.Resolve$9.doLookup(Resolve.java:2409) at com.sun.tools.javac.comp.Resolve$BasicLookupHelper.lookup(Resolve.java:3019) at com.sun.tools.javac.comp.Resolve.lookupMethod(Resolve.java:3269) at com.sun.tools.javac.comp.Resolve.resolveQualifiedMethod(Resolve.java:2406) at com.sun.tools.javac.comp.Resolve.resolveQualifiedMethod(Resolve.java:2400) at com.sun.tools.javac.comp.Attr.selectSym(Attr.java:3735) at com.sun.tools.javac.comp.Attr.visitSelect(Attr.java:3613) at com.sun.tools.javac.tree.JCTree$JCFieldAccess.accept(JCTree.java:2075) at com.sun.tools.javac.comp.Attr$ResultInfo.attr(Attr.java:496) at com.sun.tools.javac.comp.Attr.attribTree(Attr.java:637) at com.sun.tools.javac.comp.Attr.visitApply(Attr.java:1923) at com.sun.tools.javac.tree.JCTree$JCMethodInvocation.accept(JCTree.java:1604) at com.sun.tools.javac.comp.Attr$ResultInfo.attr(Attr.java:496) at com.sun.tools.javac.comp.Attr.attribTree(Attr.java:637) at com.sun.tools.javac.comp.Attr.attribExpr(Attr.java:683) at com.sun.tools.javac.comp.Attr.visitExec(Attr.java:1693) at com.sun.tools.javac.tree.JCTree$JCExpressionStatement.accept(JCTree.java:1422) at com.sun.tools.javac.comp.Attr$ResultInfo.attr(Attr.java:496) at com.sun.tools.javac.comp.Attr.attribTree(Attr.java:637) at com.sun.tools.javac.comp.Attr.attribStat(Attr.java:707) at com.sun.tools.javac.comp.Attr.attribStats(Attr.java:731) at com.sun.tools.javac.comp.Attr.visitBlock(Attr.java:1210) at org.netbeans.lib.nbjavac.services.NBAttr.visitBlock(NBAttr.java:82) at com.sun.tools.javac.tree.JCTree$JCBlock.accept(JCTree.java:990) at com.sun.tools.javac.comp.Attr$ResultInfo.attr(Attr.java:496) at com.sun.tools.javac.comp.Attr.attribTree(Attr.java:637) at com.sun.tools.javac.comp.Attr.attribStat(Attr.java:707) at com.sun.tools.javac.comp.Attr.visitIf(Attr.java:1682) at com.sun.tools.javac.tree.JCTree$JCIf.accept(JCTree.java:1391) at com.sun.tools.javac.comp.Attr$ResultInfo.attr(Attr.java:496) at com.sun.tools.javac.comp.Attr.attribTree(Attr.java:637) at com.sun.tools.javac.comp.Attr.attribStat(Attr.java:707) at com.sun.tools.javac.comp.Attr.attribStats(Attr.java:731) at com.sun.tools.javac.comp.Attr.visitBlock(Attr.java:1210) at org.netbeans.lib.nbjavac.services.NBAttr.visitBlock(NBAttr.java:82) at com.sun.tools.javac.tree.JCTree$JCBlock.accept(JCTree.java:990) at com.sun.tools.javac.comp.Attr$ResultInfo.attr(Attr.java:496) at com.sun.tools.javac.comp.Attr.attribTree(Attr.java:637) at com.sun.tools.javac.comp.Attr.attribStat(Attr.java:707) at com.sun.tools.javac.comp.Attr.attribStatToTree(Attr.java:412) at com.sun.tools.javac.api.JavacTrees.attribStatToTree(JavacTrees.java:979) at com.sun.tools.javac.api.JavacTrees.getAttrContext(JavacTrees.java:938) at com.sun.tools.javac.api.JavacTrees.getScope(JavacTrees.java:797) at com.sun.tools.javac.api.JavacTrees.getScope(JavacTrees.java:157) at org.netbeans.modules.java.source.matching.CopyFinder.fullPrepareThis(CopyFinder.java:1755) at org.netbeans.modules.java.source.matching.CopyFinder.prepareThis(CopyFinder.java:1749) at org.netbeans.modules.java.source.matching.CopyFinder.deepVerifyIdentifier2MemberSelect(CopyFinder.java:1037) at org.netbeans.modules.java.source.matching.CopyFinder.visitIdentifier(CopyFinder.java:1026) at org.netbeans.modules.java.source.matching.CopyFinder.visitIdentifier(CopyFinder.java:120) at com.sun.tools.javac.tree.JCTree$JCIdent.accept(JCTree.java:2202) at com.sun.source.util.TreeScanner.scan(TreeScanner.java:87) at org.netbeans.modules.java.source.matching.CopyFinder.doSuperScan(CopyFinder.java:590) at org.netbeans.modules.java.source.matching.CopyFinder.superScan(CopyFinder.java:582) at org.netbeans.modules.java.source.matching.CopyFinder.scan(CopyFinder.java:477) at org.netbeans.modules.java.source.matching.CopyFinder.scan(CopyFinder.java:603) at org.netbeans.modules.java.source.matching.CopyFinder.visitMethodInvocation(CopyFinder.java:616) at org.netbeans.modules.java.source.matching.CopyFinder.visitMethodInvocation(CopyFinder.java:120) at com.sun.tools.javac.tree.JCTree$JCMethodInvocation.accept(JCTree.java:1620) at com.sun.source.util.TreeScanner.scan(TreeScanner.java:87) at org.netbeans.modules.java.source.matching.CopyFinder.doSuperScan(CopyFinder.java:590) at org.netbeans.modules.java.source.matching.CopyFinder.superScan(CopyFinder.java:582) at org.netbeans.modules.java.source.matching.CopyFinder.scan(CopyFinder.java:477) at org.netbeans.modules.java.source.matching.CopyFinder.scan(CopyFinder.java:318) at org.netbeans.modules.java.source.matching.CopyFinder.internalComputeDuplicates(CopyFinder.java:185) at org.netbeans.api.java.source.matching.Matcher.match(Matcher.java:189) at org.netbeans.modules.java.hints.spiimpl.hints.HintsInvoker.doComputeHints(HintsInvoker.java:563) at org.netbeans.modules.java.hints.spiimpl.hints.HintsInvoker.computeHintsImpl(HintsInvoker.java:306) at org.netbeans.modules.java.hints.spiimpl.hints.HintsInvoker.computeHints(HintsInvoker.java:251) at org.netbeans.modules.java.hints.spiimpl.hints.HintsInvoker.computeHints(HintsInvoker.java:216) at org.netbeans.modules.java.hints.spiimpl.hints.HintsInvoker.computeHints(HintsInvoker.java:189) at org.netbeans.modules.java.hints.spiimpl.hints.HintsInvoker.computeHints(HintsInvoker.java:151) at org.netbeans.modules.java.hints.spiimpl.hints.HintsTask.run(HintsTask.java:137) at org.netbeans.modules.java.hints.spiimpl.hints.HintsTask.run(HintsTask.java:88) at org.netbeans.modules.java.source.JavaSourceAccessor$CancelableTaskWrapper.run(JavaSourceAccessor.java:298) at org.netbeans.modules.parsing.impl.TaskProcessor.callParserResultTask(TaskProcessor.java:584) at org.netbeans.modules.parsing.impl.TaskProcessor$RequestPerformer.run(TaskProcessor.java:809) at org.openide.util.lookup.Lookups.executeWith(Lookups.java:304) at org.netbeans.modules.parsing.impl.TaskProcessor$RequestPerformer.execute(TaskProcessor.java:725) at org.netbeans.modules.parsing.impl.TaskProcessor$CompilationJob.run(TaskProcessor.java:686) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.run(FutureTask.java:266) at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:1443) at org.netbeans.modules.openide.util.GlobalLookup.execute(GlobalLookup.java:68) at org.openide.util.lookup.Lookups.executeWith(Lookups.java:303) at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:2058)