public function created($primitive = 'Created')
    {
        $payload = null;

        if ($primitive instanceof EloquentModel) {
            // If an Eloquent Model was passed as the $primitive argument,
            // it just defer the job to respondItem() method.
            // On receiving the job, respondItem() method does its best
            // to transform the given Elequent Model with SimpleArrayTransformer.
            return $this->setStatusCode(StatusCode::CREATED)->withItem($primitive);
        }

        return $this->setStatusCode(StatusCode::CREATED)->respond(
            $this->format($primitive, config('api.successFormat'))
        );
    }