,</span> checkpointId<span class="operator">:</span> <span class="builtin">string</span><span class="punctuation">)</span> <span class="operator">=></span> <span class="keyword">void</span></code></td><td><p>A function which is called after the checkpoint is moved, with a reference to the <a href="/api/checkpoints/interfaces/checkpoints/checkpoints/"><code>Checkpoints</code></a> object and the checkpoint <a href="/api/common/type-aliases/identity/id/"><code>Id</code></a> moved to.</p></td></tr><tr><th><code