Issue #3268540 by jurgenhaas: Cleanup code to pass PHPCS tests

  }

  /**

   * Walk through element array recursively and add the extra submit-handler to

   * all elements where necessary.

   * Add submit handler to nested elements if necessary.

   *

   * Walks through the element array recursively and adds the extra

   * submit-handler to all elements where necessary.

   *

   * @param array $elements

   *   A render array to walk through.