private function persisterMethod($method)
    {
        $processed = [];
        foreach ($this->getImportersForContext() as $importer) {
            $persister = $importer->getPersister();
            foreach ($processed as $class) {
                if ($persister instanceof $class) {
                    continue 2;
                }
            }
            $importer->getPersister()->$method();
            $processed[] = get_class($persister);
        }
    }