public function bootstrap($app)
{
// add trace
Yii::beginProfile('LUYA Boostrap process profiling', __METHOD__);
$this->extractModules($app);
$this->beforeRun($app);
$this->registerComponents($app);
$this->run($app);
// end trace
Yii::trace('End of the LUYA bootstraping process', __METHOD__);
Yii::endProfile('LUYA Boostrap process profiling');
}