code: function unsuspendSubscriber (topic, token) {
      if (typeof token === 'string') {
        return !!applyTopicDescendents(
          unsuspendTopic, 'subscriptions', token, topic
        );
      }
  
      var node = ancestorTopicSearch(token.topic, topic);
      if (node.topic !== token.topic) {
        return false;
      }
  
      var i = searchAround(
        getId, getPriority,
        token.id, token.priority,
        binaryIndexBy(getPriority, token.priority, node.subscriptions),
        node.subscriptions
      );
  
      if (i === -1) {
        return false;
      }
  
      return !!unsuspendNode(node.subscriptions[i]);
    }
docs: Finds the subscription associated with a token and unsuspendes it. Returns false if it was removed and true it was unsuspended.