navigation.php

<?php
	public function beforeCompile()
	{
		$navigationFactory = $builder->getDefinition($this->prefix('navigationFactory'));

		$priorityQueue = new \SplPriorityQueue();

		foreach ($builder->findByTag(self::NAVIGATION_CONTRIBUTOR) as $name => $attrs) {
			$priorityQueue->insert('@' . $name, is_array($attrs) && isset($attrs['priority']) ? $attrs['priority'] : self::DEFAULT_NAVIGATION_CONTRIBUTOR_PRIORITY);
		}

		foreach ($priorityQueue as $entry) {
			$navigationFactory->addSetup('addContributor', [$entry]);
		}

routing.php

<?php
	public function beforeCompile()
	{

		$builder = $this->getContainerBuilder();

		$router = $builder->getDefinition('router');
		$router->addSetup('offsetSet', array(new PhpLiteral('NULL'), new Statement($this->prefix('@router::create'))));