pubsub#ack - mark callback as optional for docs.

googleapis · Mar 30, 2015 · 74ced67 · 74ced67
1 parent 13ad9dc
commit 74ced67
Showing 1 changed file with 2 additions and 2 deletions.
diff --git a/lib/pubsub/subscription.js b/lib/pubsub/subscription.js
@@ -243,12 +243,12 @@ Subscription.prototype.startPulling_ = function() {
 
 /**
  * Acknowledge to the backend that the message was retrieved. You must provide
- * either a single ID, or an array of IDs.
+ * either a single ID or an array of IDs.
  *
  * @throws {Error} If at least one id is not provided.
  *
  * @param {string|string[]} ids - An ID or array of message IDs.
- * @param {function} callback - The callback function.
+ * @param {function=} callback - The callback function.
  *
  * @example
  * subscription.ack('ePHEESyhuE8e...', function(err) {});