java.lang.AssertionError: Invalid start:-8
   at org.netbeans.modules.csl.api.OffsetRange.<init>(OffsetRange.java:65)
   at org.netbeans.modules.groovy.editor.api.ASTUtils$2.computeRange(ASTUtils.java:502)
   at org.netbeans.modules.groovy.editor.api.ASTUtils$2.run(ASTUtils.java:485)
   at org.netbeans.editor.BaseDocument.render(BaseDocument.java:1383)
   at org.netbeans.modules.groovy.editor.api.ASTUtils.getNextIdentifierByName(ASTUtils.java:478)
   at org.netbeans.modules.groovy.editor.api.FindTypeUtils.getRange(FindTypeUtils.java:507)
   at org.netbeans.modules.groovy.editor.api.FindTypeUtils.getVariableRange(FindTypeUtils.java:499)
   at org.netbeans.modules.groovy.editor.api.FindTypeUtils.isCaretOnVariableType(FindTypeUtils.java:369)
   at org.netbeans.modules.groovy.editor.api.FindTypeUtils.findCurrentNode(FindTypeUtils.java:206)
   at org.netbeans.modules.groovy.editor.api.FindTypeUtils.isCaretOnClassNode(FindTypeUtils.java:102)
   at org.netbeans.modules.groovy.editor.occurrences.VariableScopeVisitor.visitDeclarationExpression(VariableScopeVisitor.java:205)
   at org.codehaus.groovy.ast.expr.DeclarationExpression.visit(DeclarationExpression.java:87)
   at org.codehaus.groovy.ast.CodeVisitorSupport.visitExpressionStatement(CodeVisitorSupport.java:69)
   at org.codehaus.groovy.ast.ClassCodeVisitorSupport.visitExpressionStatement(ClassCodeVisitorSupport.java:195)
   at org.codehaus.groovy.ast.stmt.ExpressionStatement.visit(ExpressionStatement.java:40)
   at org.codehaus.groovy.ast.CodeVisitorSupport.visitBlockStatement(CodeVisitorSupport.java:35)
   at org.codehaus.groovy.ast.ClassCodeVisitorSupport.visitBlockStatement(ClassCodeVisitorSupport.java:165)
   at org.netbeans.modules.groovy.editor.occurrences.TypeVisitor.collect(TypeVisitor.java:157)
   at org.netbeans.modules.groovy.editor.api.parser.GroovyOccurrencesFinder.highlight(GroovyOccurrencesFinder.java:196)
   at org.netbeans.modules.groovy.editor.api.parser.GroovyOccurrencesFinder.run(GroovyOccurrencesFinder.java:159)
   at org.netbeans.modules.groovy.editor.api.parser.GroovyOccurrencesFinder.run(GroovyOccurrencesFinder.java:76)
   at org.netbeans.modules.csl.editor.semantic.MarkOccurrencesHighlighter.processImpl(MarkOccurrencesHighlighter.java:166)
   at org.netbeans.modules.csl.editor.semantic.MarkOccurrencesHighlighter.run(MarkOccurrencesHighlighter.java:131)
   at org.netbeans.modules.csl.editor.semantic.MarkOccurrencesHighlighter.run(MarkOccurrencesHighlighter.java:81)
   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$Task.run(RequestProcessor.java:1432)
   at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:2042)