Issue #3463594 by alexpott: ImageAdminStylesTest::testAjaxEnabledEffectForm()...

    return $this->buildStatusMessageSelector($message, $type) . ' | ' . $js_selector;

  }

  /**

   * {@inheritdoc}

   */

  public function statusMessageContains(string $message, ?string $type = NULL): void {

    $selector = $this->buildStatusMessageSelector($message, $type);

    $this->waitForElement('xpath', $selector);

    parent::statusMessageContains($message, $type);

  }

  /**

   * {@inheritdoc}

   */

  public function statusMessageNotContains(string $message, ?string $type = NULL): void {

    $selector = $this->buildStatusMessageSelector($message, $type);

    // Wait for a second for the message to not exist.

    $this->waitForHelper(1000, function (Element $page) use ($selector) {

      return !$page->find('xpath', $selector);

    });

    parent::statusMessageNotContains($message, $type);

  }

}