an name="l">l: <a href="ExprLang.html" name="provingground.translation.ExprLang" id="provingground.translation.ExprLang" class="extype">ExprLang</a>[<span name="provingground.translation.FreeExpr.as.E" class="extype">E</span>]</span>)</span><span class="result">: <span name="scala.Option" class="extype">Option</span>[<span name="provingground.translation.FreeExpr.as.E" class="extype">E</span>]</span></span></li></ol></div><div class="values members"><h3>Concrete Value Members</h3><ol><li class="indented0 " 