aliases/identity/id/"><code>Id</code></a> of a possible <a href="/api/store/type-aliases/store/value/"><code>Value</code></a> in the <a href="/api/the-essentials/creating-stores/store/"><code>Store</code></a>.</p></td></tr><tr><th class="right">returns</th><td><code><span class="builtin">boolean</span></code></td><td><p></p><p>Whether a <a href="/api/store/type-aliases/store/value/"><code>Value</code></a> with that <a href="/api/common/type-aliases/identity/id/"><code>Id</code></a> exists in the <a href="/a