sult">: String</span>
      </span>
      </h4>
      <div class="fullcomment"><dl class="attributes block"> <dt>Definition Classes</dt><dd><a name="org.saddle.util.Concat.Promoter" class="extype" href="Concat$$Promoter.html">Promoter</a> → AnyRef → Any</dd></dl></div>
    </li><li visbl="pub" name="scala.AnyRef#wait" data-isabs="false">
      <a id="wait():Unit"></a>
      <h4 class="signature">
      <span class="modifier_kind">
        <span class="modifier">final </span>
        <span class="kind">d