code: protected static void triggerCustomExceptionHandler (@Nonnull final Throwable t,
                                                         @Nullable final String sJobClassName,
                                                         @Nonnull final IJob aJob)
    {
      exceptionCallbacks ().forEach (x -> x.onScheduledJobException (t, sJobClassName, aJob));
    }
docs: Called when an exception of the specified type occurred
  
  @param t
  The exception. Never <code>null</code>.
  @param sJobClassName
  The name of the job class
  @param aJob
  The {@link IJob} instance