<section aria-labelledby="toc_2-turn-on-a-deprecation">2. "Turn on">
<p>Once you have built your <code>deprecation-workflow.js</code> file and your deprecations are silenced, you can begin to work on deprecations one by one
at your own leisure.  To find deprecations, you can change the handler value of that message to either <code>throw</code> or <code>log</code>.  Throw will
throw an actual exception when the deprecation is encountered, so that tests that use the deprecated feature will fail.  Choosing to 