Register a callback interface to be
called when a new source is seen for any topic.

C# |
public void addSourceNotifyCallback( LBMSourceNotification cb )

- cb (LBMSourceNotification)
- Callback implementing the LBMSourceNotification delegate interface

This callback is
called directly in line and does not use the event queue; therefore,
the callback function used should not block or it will block the
context thread processing. This facility is disabled by default
and may be enabled by calling the
enableSourceNotification()()()
method prior to instantiation of LBMContext.