public function registerContainerConfiguration(LoaderInterface $loader)
{
parent::registerContainerConfiguration($loader);
if (in_array($this->getEnvironment(), ['dev', 'test'])) {
$loader->load(implode(DIRECTORY_SEPARATOR, [__DIR__, '..', '..', 'Resources', 'config', 'config_preview_dev.yml']));
}
$loader->load(implode(DIRECTORY_SEPARATOR, [__DIR__, '..', '..', 'Resources', 'config', 'config_preview.yml']));
}