Author: Tim Wagner (tw@appserver.io)
Inheritance: extends AppserverIo\Description\Api\Node\AbstractNode, implements AppserverIo\Appserver\Core\Api\Node\BootstrapNodeInterface, use trait AppserverIo\Appserver\Core\Api\Node\ListenersNodeTrait
 /**
  * Loads the bootstrap configuration from the XML file.
  *
  * @return \AppserverIo\Appserver\Core\Api\Node\BootstrapNode The boostrap configuration
  */
 protected function doLoadBootstrap($bootstrapConfigurationFilename)
 {
     // initialize the bootstrap configuration
     $bootstrapNode = new BootstrapNode();
     $bootstrapNode->initFromFile($bootstrapConfigurationFilename);
     // return the bootstrap configuration
     return $bootstrapNode;
 }