   <dd>Any other value will not break but rather resolve immediately (implements <code>$q.when</code>).</dd>
            </dl>
            <!-- End Multiple Promises -->

            <br>

            <!-- Custom Configuration -->
            <h4 id="classes">CSS Classes</h4>
            <p>By default, the directives apply 4 classes to the elements depending on the state of the promise:</p>
            <dl class="dl-horizontal">
              <dt><code>idle</code></dt>
              <dd>There is no current 