code: @Override
      protected final void configure()
      {
          checkState( jobListeners == null, "Re-entry is not allowed." );
          checkState( triggerListeners == null, "Re-entry is not allowed." );
          checkState( schedulerListeners == null, "Re-entry is not allowed." );
          checkState( schedulerConfiguration == null, "Re-entry is not allowed." );
  
          jobListeners = newSetBinder( binder(), JobListener.class );
          triggerListeners = newSetBinder( binder(), TriggerListener.class );
          schedulerListeners = newSetBinder( binder(), SchedulerListener.class );
          schedulerConfiguration = new SchedulerConfiguration();
  
          try
          {
              schedule();
              bind( JobFactory.class ).to( InjectorJobFactory.class ).in( SINGLETON );
              bind( Scheduler.class ).toProvider( SchedulerProvider.class ).asEagerSingleton();
              bind( SchedulerConfiguration.class ).toInstance( schedulerConfiguration );
          }
          finally
          {
              jobListeners = null;
              triggerListeners = null;
              schedulerListeners = null;
              schedulerConfiguration = null;
          }
      }
docs: {@inheritDoc}