unset($preprocess_bubbleable['#cache']['keys']);
if ($preprocess_bubbleable) {
// @todo Inject the Renderer in https://www.drupal.org/node/2529438.
unset($preprocess_bubbleable['#cache']['keys']);
if ($preprocess_bubbleable) {
// @todo Inject the Renderer in https://www.drupal.org/node/2529438.