Brandon a5cbfa2aab docs: backport fix to event-binding example for production build (#28423)
Examples are run in production mode and the methods weren't optional.

PR Close #28423
2019-03-14 16:56:13 -04:00
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2018-10-30 16:24:13 -04:00
2017-05-03 13:44:41 -07:00