/**
  * Access a list of meta values
  *
  * Example:
  *
  * ```html
  * <ul>
  *   {% for meta in episode.metas("mymetakey") %}
  *     <li>{{ meta }}</li>
  *   {% endfor %}
  * </ul>
  *
  * {% for meta in episode.metas("mymetakey") %}
  *   {{ meta }}{% if not loop.last %}, {% endif %}
  * {% endfor %}
  * ```
  *   
  * @accessor
  */
 public function metas($meta_key)
 {
     return $this->episode->meta($meta_key, false);
 }