s="symbol"><span class="name">apply</span><span class="params">(<span name="inp">inp: <span name="provingground.translation.Translator.Empty.I" class="extype">I</span></span>)</span><span class="result">: <span name="scala.Option" class="extype">Option</span>[<span name="provingground.translation.Translator.Empty.O" class="extype">O</span>]</span></span><div class="fullcomment"><dl class="attributes block"><dt>Definition Classes</dt><dd><a href="Translator.html" name="provingground.translation.Translator" i