java.lang.NullPointerException
   at org.netbeans.modules.jshell.editor.CommandCompletionProvider$CommandDocumentationTask.query(CommandCompletionProvider.java:384)
   at org.netbeans.modules.editor.completion.CompletionImpl.queryResultSets(CompletionImpl.java:1860)
   at org.netbeans.modules.editor.completion.CompletionImpl.documentationQuery(CompletionImpl.java:1380)
   at org.netbeans.modules.editor.completion.CompletionImpl.showDocumentation(CompletionImpl.java:1317)
   at org.netbeans.modules.editor.completion.CompletionImpl$5.actionPerformed(CompletionImpl.java:285)
   at javax.swing.Timer.fireActionPerformed(Timer.java:313)
   at javax.swing.Timer$DoPostEvent.run(Timer.java:245)
   at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:311)
   at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:756)
   at java.awt.EventQueue.access$500(EventQueue.java:97)
   at java.awt.EventQueue$3.run(EventQueue.java:709)
   at java.awt.EventQueue$3.run(EventQueue.java:703)
   at java.security.AccessController.doPrivileged(AccessController.java:0)
   at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:76)
   at java.awt.EventQueue.dispatchEvent(EventQueue.java:726)
   at org.netbeans.core.TimableEventQueue.dispatchEvent(TimableEventQueue.java:159)
   at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:201)
   at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:116)
   at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:105)
   at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:101)
   at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:93)
   at java.awt.EventDispatchThread.run(EventDispatchThread.java:82)