IMessageSessionAsyncHandler supporting documentation

I have watched Abhishek Lal’s Build presentation (http://channel9.msdn.com/Events/Build/2014/3-636 ).

I’m just looking for some detailed documentation or sample code to match what Abhishek presented – especially around IMessageSessionAsyncHandler.  There is very little detail in the current MSDN docs (http://msdn.microsoft.com/en-us/library/microsoft.servicebus.messaging.imessagesessionasynchandler.aspx).  Could you point me to any other resources?

Thanks,

Terry