on Source Started
Called when a specific Source within a playlist is about to start or has just started its playback or display.
This callback provides an opportunity to perform actions just before or as a content item becomes active. Implementers can also use this point to prevent a specific source from playing by throwing a SkipSourceException.
Parameters
See also
Throws
if the playback of this particular source
should be actively prevented or skipped by the playback engine.