NPE when insert a panel item in VerticalNavigation when there a second level items

There is a bug in VerticalNavigation when navigation.insertPrimary is used to insert a panel before a specific id, there is a NPE. If the beforeId is not specified it works.

navigation.insertPrimary(primId, "msg-remote-external-queue-item", Names.POOLED_CONNECTION_FACTORY, pfIcon("replicator"), htmlSection);