         <td>The class that will be applied to the button whenever a promise is in progress.</td>
                </tr>
                <tr>
                  <td><code>success_class</code></td>
                  <td><span class="label label-primary">string</span></td>
                  <td><code>success</code></td>
                  <td>The class that will be applied to the button when a promise is resolved (completed successfully).</td>
                </tr>
                <tr>
                  <td><cod