An optional <a href="/api/common/type-aliases/identity/id/"><code>Id</code></a> for accessing a <a href="/api/checkpoints/interfaces/checkpoints/checkpoints/"><code>Checkpoints</code></a> object that was named with an <a href="/api/common/type-aliases/identity/id/"><code>Id</code></a> in the Provider.</p></td></tr><tr><th class="right">returns</th><td><code><span class="type"><a href="/api/checkpoints/interfaces/checkpoints/checkpoints/">Checkpoints</a></span> <span class="operator">|</span> <span class="ke