trait UrlGeneratorTrait

trait UrlGeneratorTrait {
    
    /**
     * The url generator.
     *
     * @var \Drupal\Core\Routing\UrlGeneratorInterface
     */
    protected $urlGenerator;
    
    /**
     * Generates a URL or path for a specific route based on the given parameters.
     *
     * For details on the arguments, usage, and possible exceptions see
     * \Drupal\Core\Routing\UrlGeneratorInterface::generateFromRoute().
     *
     * @return string
     *   The generated URL for the given route.
     *
     * @deprecated in drupal:8.0.0 and is removed from drupal:9.0.0.
     *   Use \Drupal\Core\Url::fromUri() instead.
     *
     * @see \Drupal\Core\Routing\UrlGeneratorInterface::generateFromRoute()
     */
    protected function url($route_name, $route_parameters = [], $options = []) {
        @trigger_error(__NAMESPACE__ . "\\UrlGeneratorTrait::url() is deprecated in drupal:8.0.0 and is removed from drupal:9.0.0. Use \\Drupal\\Core\\Url::fromUri() instead. See https://www.drupal.org/node/2614344", E_USER_DEPRECATED);
        return $this->getUrlGenerator()
            ->generateFromRoute($route_name, $route_parameters, $options);
    }
    
    /**
     * Returns a redirect response object for the specified route.
     *
     * @param string $route_name
     *   The name of the route to which to redirect.
     * @param array $route_parameters
     *   (optional) Parameters for the route.
     * @param array $options
     *   (optional) An associative array of additional options.
     * @param int $status
     *   (optional) The HTTP redirect status code for the redirect. The default is
     *   302 Found.
     *
     * @return \Symfony\Component\HttpFoundation\RedirectResponse
     *   A redirect response object that may be returned by the controller.
     *
     * @deprecated in drupal:8.0.0 and is removed from drupal:9.0.0.
     *   Use new RedirectResponse(Url::fromRoute()) instead.
     */
    protected function redirect($route_name, array $route_parameters = [], array $options = [], $status = 302) {
        @trigger_error(__NAMESPACE__ . "\\UrlGeneratorTrait::redirect() is deprecated in drupal:8.0.0 and is removed from drupal:9.0.0. Use new RedirectResponse(Url::fromRoute()) instead. See https://www.drupal.org/node/2614344", E_USER_DEPRECATED);
        $options['absolute'] = TRUE;
        $url = $this->getUrlGenerator()
            ->generateFromRoute($route_name, $route_parameters, $options);
        return new RedirectResponse($url, $status);
    }
    
    /**
     * Returns the URL generator service.
     *
     * @return \Drupal\Core\Routing\UrlGeneratorInterface
     *   The URL generator service.
     *
     * @deprecated in drupal:8.0.0 and is removed from drupal:9.0.0.
     *   Use the url_generator service instead.
     */
    protected function getUrlGenerator() {
        @trigger_error(__NAMESPACE__ . "\\UrlGeneratorTrait::getUrlGenerator() is deprecated in drupal:8.0.0 and is removed from drupal:9.0.0. Use the url_generator service instead. See https://www.drupal.org/node/2614344", E_USER_DEPRECATED);
        if (!$this->urlGenerator) {
            $this->urlGenerator = \Drupal::service('url_generator');
        }
        return $this->urlGenerator;
    }
    
    /**
     * Sets the URL generator service.
     *
     * @param \Drupal\Core\Routing\UrlGeneratorInterface $generator
     *   The url generator service.
     *
     * @return $this
     *
     * @deprecated in drupal:8.0.0 and is removed from drupal:9.0.0.
     */
    public function setUrlGenerator(UrlGeneratorInterface $generator) {
        @trigger_error(__NAMESPACE__ . "\\UrlGeneratorTrait::setUrlGenerator() is deprecated in drupal:8.0.0 and is removed from drupal:9.0.0. See https://www.drupal.org/node/2614344", E_USER_DEPRECATED);
        $this->urlGenerator = $generator;
        return $this;
    }

}