n><span class="params">(<span name="cond">cond: <span name="scala.Boolean" class="extype">Boolean</span></span>)</span><span class="result">: <a href="" name="provingground.translation.NestedDoc.RecBlockDoc" id="provingground.translation.NestedDoc.RecBlockDoc" class="extype">RecBlockDoc</a>[<span name="provingground.translation.NestedDoc.RecBlockDoc.T" class="extype">T</span>]</span></span><div class="fullcomment"><dl class="attributes block"><dt class="implicit">Implicit</dt><dd>This member is added by an 