orm_single_em_bundle_mappings.yml

doctrine.orm:
  mappings:
    AnnotationsBundle: ~
    YamlBundle:
      dir: Resources/config/doctrine/metadata
      alias: yml
    manual:
      type: xml
      prefix: Fixtures\Bundles\XmlBundle
      dir: %kernel.root_dir%/../src/Symfony/Bundle/DoctrineBundle/Tests/DependencyInjection/Fixtures/Bundles/XmlBundle/Resources/config/doctrine/metadata
      alias: TestAlias