ResourceResponseTrait.php

<?php

namespace Drupal\rest;

trait ResourceResponseTrait {
    
    /**
     * Response data that should be serialized.
     *
     * @var mixed
     */
    protected $responseData;
    
    /**
     * Returns response data that should be serialized.
     *
     * @return mixed
     *   Response data that should be serialized.
     */
    public function getResponseData() {
        return $this->responseData;
    }

}