lass="field "><a name="unregister"></a><h3 class="anchor"><code><a href="#unregister"><span class="identifier">unregister</span></a>():<a class="type" title="js.lib.Promise - The Promise object represents the eventual completion (or failure) of an asynchronous operation and its resulting value." href="../../js/lib/Promise.html">Promise</a>&lt;<a class="type" title="Bool - The standard Boolean type, which can either be true or false." href="../../Bool.html">Bool</a>&gt;</code></h3><div class="doc"><p>Unregis