java.lang.NullPointerException
        at com.sun.tools.javac.api.JavacTrees.getTypeMirror(JavacTrees.java:187)
        at org.netbeans.modules.web.wicket.tree.ComponentIdFinder.scanInArgs(ComponentIdFinder.java:44)
        at org.netbeans.modules.web.wicket.tree.ComponentIdFinder.visitNewClass(ComponentIdFinder.java:59)
        at org.netbeans.modules.web.wicket.tree.ComponentIdFinder.visitNewClass(ComponentIdFinder.java:34)
        at com.sun.tools.javac.tree.JCTree$JCNewClass.accept(JCTree.java:1366)
        at com.sun.source.util.TreeScanner.scan(TreeScanner.java:76)
        at com.sun.source.util.TreeScanner.visitThrow(TreeScanner.java:255)
        at com.sun.tools.javac.tree.JCTree$JCThrow.accept(JCTree.java:1248)
        at com.sun.source.util.TreeScanner.scan(TreeScanner.java:76)
        at com.sun.source.util.TreeScanner.scanAndReduce(TreeScanner.java:80)
        at com.sun.source.util.TreeScanner.visitIf(TreeScanner.java:233)
        at com.sun.tools.javac.tree.JCTree$JCIf.accept(JCTree.java:1127)
        at com.sun.source.util.TreeScanner.scan(TreeScanner.java:76)
        at com.sun.source.util.TreeScanner.scanAndReduce(TreeScanner.java:80)
        at com.sun.source.util.TreeScanner.scan(TreeScanner.java:90)
        at com.sun.source.util.TreeScanner.visitBlock(TreeScanner.java:159)
        at com.sun.tools.javac.tree.JCTree$JCBlock.accept(JCTree.java:778)
        at com.sun.source.util.TreeScanner.scan(TreeScanner.java:76)
        at com.sun.source.util.TreeScanner.scanAndReduce(TreeScanner.java:80)
        at com.sun.source.util.TreeScanner.visitMethod(TreeScanner.java:142)
        at com.sun.tools.javac.tree.JCTree$JCMethodDecl.accept(JCTree.java:678)
        at org.netbeans.modules.web.wicket.tree.ComponentIdFinder.visitNewClass(ComponentIdFinder.java:71)
        at org.netbeans.modules.web.wicket.tree.ComponentIdFinder.visitNewClass(ComponentIdFinder.java:34)
        at com.sun.tools.javac.tree.JCTree$JCNewClass.accept(JCTree.java:1366)
        at com.sun.source.util.TreeScanner.scan(TreeScanner.java:76)
        at com.sun.source.util.TreeScanner.scanAndReduce(TreeScanner.java:80)
        at com.sun.source.util.TreeScanner.scan(TreeScanner.java:90)
        at com.sun.source.util.TreeScanner.scanAndReduce(TreeScanner.java:98)
        at com.sun.source.util.TreeScanner.visitNewClass(TreeScanner.java:275)
        at org.netbeans.modules.web.wicket.tree.ComponentIdFinder.visitNewClass(ComponentIdFinder.java:78)
        at org.netbeans.modules.web.wicket.tree.ComponentIdFinder.visitNewClass(ComponentIdFinder.java:34)
        at com.sun.tools.javac.tree.JCTree$JCNewClass.accept(JCTree.java:1366)
        at org.netbeans.modules.web.wicket.tree.JavaTreeBuilder$T.run(JavaTreeBuilder.java:177)
        at org.netbeans.modules.web.wicket.tree.JavaTreeBuilder$T.run(JavaTreeBuilder.java:86)
        at org.netbeans.api.java.source.JavaSource.runUserActionTaskImpl(JavaSource.java:680)
        at org.netbeans.api.java.source.JavaSource.runUserActionTask(JavaSource.java:607)
        at org.netbeans.modules.web.wicket.tree.JavaTreeBuilder.analyze(JavaTreeBuilder.java:71)
        at org.netbeans.modules.web.wicket.verification.WicketProblemAnnotationProvider.annotate(WicketProblemAnnotationProvider.java:186)
        at org.netbeans.modules.web.wicket.verification.WicketProblemAnnotationProvider.annotate(WicketProblemAnnotationProvider.java:175)
        at org.netbeans.modules.web.wicket.verification.WicketProblemAnnotationProvider.annotate(WicketProblemAnnotationProvider.java:118)
        at org.netbeans.modules.web.wicket.verification.WicketProblemAnnotationProvider.access$700(WicketProblemAnnotationProvider.java:59)
        at org.netbeans.modules.web.wicket.verification.WicketProblemAnnotationProvider$ScanningDocumentListener.run(WicketProblemAnnotationProvider.java:554)
        at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:572)
        at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:997)