an class="n">SimpleStringSchema</span><span class="p">())</span><span class="w"> 
</span></span></span><span class="line"><span class="cl"><span class="w">  </span><span class="p">.</span><span class="na">serviceUrl</span><span class="p">(</span><span class="n">serviceUrl</span><span class="p">)</span><span class="w">
</span></span></span><span class="line"><span class="cl"><span class="w">  </span><span class="p">.</span><span class="na">topic</span><span class="p">(</span><span class="n">inputTopic</span>