private function loadFilesystemFeatureLocator(ContainerBuilder $container)
    {
        $definition = new Definition('Behat\Behat\Gherkin\Specification\Locator\FilesystemFeatureLocator', array(
            new Reference(self::MANAGER_ID),
            '%paths.base%'
        ));
        $definition->addTag(SpecificationExtension::LOCATOR_TAG, array('priority' => 60));
        $container->setDefinition(SpecificationExtension::LOCATOR_TAG . '.filesystem_feature', $definition);
    }