ground.translation.Translator.Empty.I" class="extype">I</span>, <span name="provingground.translation.Translator.Empty.O" class="extype">O</span>], (<span name="provingground.translation.Translator.Empty.I" class="extype">I</span>) =&gt; <span name="scala.Option" class="extype">Option</span>[<span name="provingground.translation.Translator.Empty.O" class="extype">O</span>], <a href="../../scala/index.html#AnyRef=Object" name="scala.AnyRef" id="scala.AnyRef" class="extmbr">AnyRef</a>, <span name="scala.Any" 