VSPackage: How to get info about a class member (method, property etc.) selected in SolutionExplorer (VS2012)

Using IVsSelectedSymbols interface I can retrieve the fully qualified name of the selected method, property etc. from Class View. How can I get the same info from the selected item in Solution Explorer (using the new feature of VS2012)?

My related question: http://social.msdn.microsoft.com/Forums/en-US/vsx/thread/9d43e739-3176-4dbe-a50a-bbde8517247f/#8dbe87c7-1a5f-4861-8453-57d609e2dd36