code: public Subscription pause( Subscription subscription ) {
      ParameterMap<String, String> params = new ParameterMap<String, String>();
      params.add( "pause", String.valueOf( true ) );
      return RestfulUtils.update( SubscriptionService.PATH, subscription, params, false, Subscription.class, super.httpClient );
    }
docs: Temporary pauses a subscription.<br>
  <br>
  <strong>NOTE</strong><br>
  Pausing is permitted until one day (24 hours) before the next charge date.
  @param subscription
  the subscription
  @return the updated subscription