getInfoUrl example

  protected static function getAccessDeniedResponse(EntityInterface $entity, AccessResultInterface $access, Url $via_link, $relationship_field_name = NULL, $detail = NULL, $pointer = NULL) {
    $detail = ($detail) ? $detail : 'The current user is not allowed to GET the selected resource.';
    if ($access instanceof AccessResultReasonInterface && ($reason = $access->getReason())) {
      $detail .= ' ' . $reason;
    }
    $error = [
      'status' => '403',
      'title' => 'Forbidden',
      'detail' => $detail,
      'links' => [
        'info' => ['href' => HttpExceptionNormalizer::getInfoUrl(403)],
      ],
    ];
    if ($pointer || $pointer !== FALSE && $relationship_field_name) {
      $error['source']['pointer'] = ($pointer) ? $pointer : $relationship_field_name;
    }
    if ($via_link) {
      $error['links']['via']['href'] = $via_link->setAbsolute()->toString();
    }

    return (new CacheableResourceResponse([
      'jsonapi' => static::$jsonApiMember,
      

'status' => (string) $status_code,
      'detail' => $exception->getMessage(),
    ];
    $error['links']['via']['href'] = \Drupal::request()->getUri();
    // Provide an "info" link by default: if the exception carries a single     // "Link" header, use that, otherwise fall back to the HTTP spec section     // covering the exception's status code.     $headers = $exception->getHeaders();
    if (isset($headers['Link']) && !is_array($headers['Link'])) {
      $error['links']['info']['href'] = $headers['Link'];
    }
    elseif ($info_url = $this->getInfoUrl($status_code)) {
      $error['links']['info']['href'] = $info_url;
    }
    // Exceptions thrown without an explicitly defined code get assigned zero by     // default. Since this is no helpful information, omit it.     if ($exception->getCode() !== 0) {
      $error['code'] = (string) $exception->getCode();
    }

    $is_verbose_reporting = \Drupal::config('system.logging')->get('error_level') === ERROR_REPORTING_DISPLAY_VERBOSE;
    $site_report_access = $this->currentUser->hasPermission('access site reports');
    if ($site_report_access && $is_verbose_reporting) {
      

// 403 when accessing own unpublished node.     $response = $this->request('GET', $url, $request_options);
    // @todo Remove $expected + assertResourceResponse() in favor of the commented line below once https://www.drupal.org/project/drupal/issues/2943176 lands.     $expected_document = [
      'jsonapi' => static::$jsonApiMember,
      'errors' => [
        [
          'title' => 'Forbidden',
          'status' => '403',
          'detail' => 'The current user is not allowed to GET the selected resource.',
          'links' => [
            'info' => ['href' => HttpExceptionNormalizer::getInfoUrl(403)],
            'via' => ['href' => $url->setAbsolute()->toString()],
          ],
          'source' => [
            'pointer' => '/data',
          ],
        ],
      ],
    ];
    $this->assertResourceResponse(
      403,
      $expected_document,
      

protected function assertResourceErrorResponse($expected_status_code, $expected_message, $via_link, ResponseInterface $response, $pointer = FALSE, $expected_cache_tags = FALSE, $expected_cache_contexts = FALSE, $expected_page_cache_header_value = FALSE, $expected_dynamic_page_cache_header_value = FALSE) {
    assert(is_null($via_link) || $via_link instanceof Url);
    $expected_error = [];
    if (!empty(Response::$statusTexts[$expected_status_code])) {
      $expected_error['title'] = Response::$statusTexts[$expected_status_code];
    }
    $expected_error['status'] = (string) $expected_status_code;
    $expected_error['detail'] = $expected_message;
    if ($via_link) {
      $expected_error['links']['via']['href'] = $via_link->setAbsolute()->toString();
    }
    if ($info_url = HttpExceptionNormalizer::getInfoUrl($expected_status_code)) {
      $expected_error['links']['info']['href'] = $info_url;
    }
    if ($pointer !== FALSE) {
      $expected_error['source']['pointer'] = $pointer;
    }

    $expected_document = [
      'jsonapi' => static::$jsonApiMember,
      'errors' => [
        0 => $expected_error,
      ],
    ];