class="attributes attributes-small">
              <dt class="body-small">
               Returns
              </dt>
              <dd class="body-medium">
               <p>the expression with the subexpression replaced.</p> 
              </dd>
             </dl>
            </div>
           </div>
          </div>
         </div>
        </div>
        <div class="documentableElement" id="subexpressions-fffffc01" data-f-extension="from Expression">
         <div class="documentableElement-expander">
  