d Type</th>
<th class="colSecond" scope="col">Field</th>
<th class="colLast" scope="col">Description</th>
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<td class="colFirst"><code>hydra.util.Opt&lt;java.lang.String&gt;</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#comment">comment</a></span></code></th>
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<div class="block">A comment for model authors</div>
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<td class="colFirst"><code>hydra.util.Opt&lt;java.lang.String&gt;</code><