/**
  * Convenience method to instantiate the plan review stopped event.
  *
  *
  * @param plan $plan The plan.
  * @return self
  */
 public static final function create_from_plan(plan $plan)
 {
     if (!$plan->get_id()) {
         throw new \coding_exception('The plan ID must be set.');
     }
     $event = static::create(array('contextid' => $plan->get_context()->id, 'objectid' => $plan->get_id(), 'relateduserid' => $plan->get_userid()));
     $event->add_record_snapshot(plan::TABLE, $plan->to_record());
     return $event;
 }