fb_instant_articles-8.x-2.2/src/Regions.php

<?php

namespace Drupal\fb_instant_articles;

/**
 * Instant article region name constants.
 */
final class Regions {

  /**
   * Header region name of an instant article.
   */
  const REGION_HEADER = 'header';

  /**
   * Content region name of an instant article.
   */
  const REGION_CONTENT = 'content';

  /**
   * Footer region name of an instant article.
   */
  const REGION_FOOTER = 'footer';

}