<table>
<thead>
<tr>
<td>Use Case</td>
<td>Example</td>
</tr>
</thead>
<tbody>
<tr>
<td>
Value must be specified
</td>
<td>
<pre>
#@schema/validation min_len=1
username: ""
</pre>
</td>
</tr>
<tr>
<td>
</td>
<td>
</td>
</tr>
</tbody>
</table>