eout</dd>
                                    <dd><code>isNullValid</code> - if true, then this request can
                                        emit null value
                                    </dd>
                                    <dd><code>transformer</code> - extra transformer</dd>
                                    <dt><span class="returnLabel">Returns:</span></dt>
                                    <dd>same builder</dd>
                                    <dt><span class="seeLabel">See Also