hasResult example

    public function addParentResults(array $writeResults, array $parents): array
    {
        foreach ($parents as $entity => $primaryKeys) {
            $primaryKeys = array_unique($primaryKeys);
            if (!isset($writeResults[$entity])) {
                $writeResults[$entity] = [];
            }

            foreach ($primaryKeys as $primaryKey) {
                if ($this->hasResult($entity, $primaryKey, $writeResults)) {
                    continue;
                }
                $writeResults[$entity][] = new EntityWriteResult($primaryKey, [], $entity, EntityWriteResult::OPERATION_UPDATE);
            }
        }

        return $writeResults;
    }

    public function addDeleteResults(array $identifiers, array $notFound, array $parents): WriteResult
    {