in">            ServerHttpRequest newRequest = request.mutate().header(HEADER_NAME, basePath).build();</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain">            ServerWebExchange newExchange = exchange.mutate().request(newRequest).build();</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain">            return chain.filter(newExchange);</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain">  