code: public Subscription updateSubscription(final String uuid, final SubscriptionUpdate subscriptionUpdate) {
          return doPUT(Subscriptions.SUBSCRIPTIONS_RESOURCE
                       + "/" + uuid,
                       subscriptionUpdate,
                       Subscription.class);
      }
docs: Update a particular {@link Subscription} by it's UUID
  <p>
  Returns information about a single subscription.
  
  @param uuid               UUID of the subscription to update
  @param subscriptionUpdate subscriptionUpdate object
  @return Subscription the updated subscription