code: public Subscription resumeSubscription(final String subscriptionUuid) {
          return doPUT(Subscription.SUBSCRIPTION_RESOURCE + "/" + subscriptionUuid + "/resume",
                  null, Subscription.class);
      }
docs: Immediately resumes a currently paused subscription.
  <p>
  For a paused subscription, this will immediately resume the subscription
  from the pause, produce an invoice, and return the newly resumed subscription.
  Any at-renewal subscription changes will be immediately applied when
  the subscription resumes.
  
  @param subscriptionUuid The uuid for the subscription you wish to pause.
  @return Subscription