xtype">Defn</a>[<span name="provingground.Context.Defn.U" class="extype">U</span>], <span name="scala.Predef.ArrowAssoc.-&gt;.B" class="extype">B</span>)</span></span><div class="fullcomment"><dl class="attributes block"><dt class="implicit">Implicit</dt><dd>This member is added by an implicit conversion from <a href="" name="provingground.Context.Defn" id="provingground.Context.Defn" class="extype">Defn</a>[<span name="provingground.Context.Defn.U" class="extype">U</span>] to<span name="scala.Predef.ArrowA