During evaluation of 'session'
Caused: java.lang.UnsupportedOperationException: Not supported element kind:RESOURCE_VARIABLE Tree = 'session'
   at org.netbeans.modules.debugger.jpda.expr.EvaluatorVisitor.visitIdentifier(EvaluatorVisitor.java:1985)
   at org.netbeans.modules.debugger.jpda.expr.EvaluatorVisitor.visitIdentifier(EvaluatorVisitor.java:194)
   at com.sun.tools.javac.tree.JCTree$JCIdent.accept(JCTree.java:1716)
   at com.sun.source.util.TreePathScanner.scan(TreePathScanner.java:49)
   at org.netbeans.modules.debugger.jpda.expr.EvaluatorVisitor.scan(EvaluatorVisitor.java:232)
   at org.netbeans.modules.debugger.jpda.expr.EvaluatorVisitor.scan(EvaluatorVisitor.java:194)
   at org.netbeans.modules.debugger.jpda.projects.EditorContextImpl.parseExpression(EditorContextImpl.java:1917)
   at sun.reflect.GeneratedMethodAccessor715.invoke(GeneratedMethodAccessor715.java:0)
   at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
   at java.lang.reflect.Method.invoke(Method.java:601)
   at org.netbeans.modules.debugger.jpda.EditorContextBridge.parseExpression(EditorContextBridge.java:130)
   at org.netbeans.modules.debugger.jpda.expr.TreeEvaluator.evaluate(TreeEvaluator.java:179)
   at org.netbeans.modules.debugger.jpda.JavaEvaluator.evaluateIn(JavaEvaluator.java:143)
   at org.netbeans.modules.debugger.jpda.JavaEvaluator.evaluate(JavaEvaluator.java:91)
   at org.netbeans.modules.debugger.jpda.expr.EvaluatorExpression$AssociatedExpression.evaluate(EvaluatorExpression.java:90)
   at org.netbeans.modules.debugger.jpda.expr.EvaluatorExpression.evaluate(EvaluatorExpression.java:73)
   at org.netbeans.modules.debugger.jpda.JPDADebuggerImpl.evaluateGeneric(JPDADebuggerImpl.java:894)
   at org.netbeans.modules.debugger.jpda.JPDADebuggerImpl.evaluate(JPDADebuggerImpl.java:351)
   at org.netbeans.modules.debugger.jpda.JPDADebuggerImpl.evaluate(JPDADebuggerImpl.java:315)
   at org.netbeans.modules.debugger.jpda.projects.ToolTipAnnotation.run(ToolTipAnnotation.java:213)
Caused: org.openide.util.RequestProcessor$SlowItem: task failed due to: java.lang.UnsupportedOperationException: Not supported element kind:RESOURCE_VARIABLE Tree = 'session'
   at org.openide.util.RequestProcessor.post(RequestProcessor.java:428)
   at org.netbeans.modules.debugger.jpda.projects.ToolTipAnnotation.getShortDescription(ToolTipAnnotation.java:157)
   at org.netbeans.modules.editor.NbToolTip$Request.resolveTooltipText(NbToolTip.java:400)
   at org.netbeans.modules.editor.NbToolTip$Request.run(NbToolTip.java:361)
   at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:1411)
   at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:1991)