code: @Override
      public void libraryNotification() {
          if (TraceComponent.isAnyTracingEnabled() && tc.isDebugEnabled())
              Tr.debug(this, tc, "libraryNotification");
          modified(null, true);
      }
docs: Notification that a shared library has changed (either in configuration or content).
  
  A service should be registered under this interface with a property of
  library=id, where id is the library id in config