Instantiate an LBM Source object associated with a given context,
topic, and event queue

C# |
public LBMSource( LBMContext lbmctx, LBMTopic lbmtopic, LBMEventQueue lbmevq )

- lbmctx (LBMContext)
- Context with which to associate the source
- lbmtopic (LBMTopic)
- LBMTopic used to initialize the source
- lbmevq (LBMEventQueue)
- Event queue with which to associate the source (all source events will be posted to this event queue)

Warning: It is not safe to call this constructor from a context thread callback.