From 8d4e04bcf499350a23e153bbc5e6a3effaaea099 Mon Sep 17 00:00:00 2001
From: Kevin Schaaf <kschaaf@google.com>
Date: Mon, 27 Aug 2018 15:10:37 -0700
Subject: [PATCH] Fix jsdoc syntax.

---
 lib/legacy/legacy-data-mixin.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/legacy/legacy-data-mixin.js b/lib/legacy/legacy-data-mixin.js
index 018ccd31f9..a2443c7926 100644
--- a/lib/legacy/legacy-data-mixin.js
+++ b/lib/legacy/legacy-data-mixin.js
@@ -30,7 +30,7 @@ const UndefinedArgumentError = class extends Error {
  * 
  * @param {Object=} effect Effect metadata object
  * @param {Object=} fnName Name of user function, if known
- * @return {Object=} Effect metadata object
+ * @return {?Object} Effect metadata object
  */
 function wrapEffect(effect, fnName) {
   if (effect && effect.fn) {