n function">lastIndexOf</span><span class="token punctuation">(</span>URI<span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
            <span class="token class-name">ServerHttpRequest</span> newRequest <span class="token operator">=</span> request<span class="token punctuation">.</span><span class="token function">mutate</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">