private function getMigration()
{
$app = \Eccube\Application::getInstance();
$app->initialize();
$app->boot();
$config = new Configuration($app['db']);
$config->setMigrationsNamespace('DoctrineMigrations');
$migrationDir = __DIR__ . '/../../Resource/doctrine/migration';
$config->setMigrationsDirectory($migrationDir);
$config->registerMigrationsFromDirectory($migrationDir);
$migration = new Migration($config);
return $migration;
}