eZ\Bundle\EzPublishCoreBundle\DependencyInjection\Compiler\ChainConfigResolverPass::process PHP Method

    public function process(ContainerBuilder $container)
    {
        if (!$container->hasDefinition('ezpublish.config.resolver.chain')) {
            return;
        }
        $chainResolver = $container->getDefinition('ezpublish.config.resolver.chain');
        foreach ($container->findTaggedServiceIds('ezpublish.config.resolver') as $id => $attributes) {
            $priority = isset($attributes[0]['priority']) ? (int) $attributes[0]['priority'] : 0;
            // Priority range is between -255 (the lowest) and 255 (the highest)
            if ($priority > 255) {
                $priority = 255;
            }
            if ($priority < -255) {
                $priority = -255;
            }
            $chainResolver->addMethodCall('addResolver', array(new Reference($id), $priority));
        }
    }