java.lang.NullPointerException
   at org.netbeans.modules.websvc.saas.model.WadlSaasResource.compareTo(WadlSaasResource.java:113)
   at org.netbeans.modules.websvc.saas.model.WadlSaasResource.compareTo(WadlSaasResource.java:54)
   at java.util.ComparableTimSort.countRunAndMakeAscending(ComparableTimSort.java:316)
   at java.util.ComparableTimSort.sort(ComparableTimSort.java:184)
   at java.util.Arrays.sort(Arrays.java:1312)
   at java.util.Arrays.sort(Arrays.java:1506)
   at java.util.ArrayList.sort(ArrayList.java:1454)
   at java.util.Collections.sort(Collections.java:141)
   at org.netbeans.modules.websvc.saas.ui.nodes.WadlSaasNodeChildren.updateKeys(WadlSaasNodeChildren.java:78)
   at org.netbeans.modules.websvc.saas.ui.nodes.SaasNodeChildren.addNotify(SaasNodeChildren.java:83)
   at org.openide.nodes.Children.callAddNotify(Children.java:575)
   at org.openide.nodes.EntrySupportDefault.getArray(EntrySupportDefault.java:650)
   at org.openide.nodes.EntrySupportDefault.getNodes(EntrySupportDefault.java:162)
   at org.openide.nodes.EntrySupportDefault.getNodesCount(EntrySupportDefault.java:176)
   at org.openide.nodes.Children.getNodesCount(Children.java:520)
   at org.openide.nodes.FilterNode$Children$DefaultSupport.callGetNodesCount(FilterNode.java:1683)
   at org.openide.nodes.FilterNode$Children.getNodesCount(FilterNode.java:1634)
   at org.openide.explorer.view.TreeView$6.run(TreeView.java:988)
   at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:1423)
   at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:2033)