 swift"><code><span class="kd">public</span> <span class="kd">func</span> <span class="n">additionalErrorInterceptor</span><span class="o">&lt;</span><span class="kt">Operation</span><span class="o">&gt;</span><span class="p">(</span><span class="k">for</span> <span class="nv">operation</span><span class="p">:</span> <span class="kt">Operation</span><span class="p">)</span> <span class="o">-&gt;</span> <span class="kt">ApolloErrorInterceptor</span><span class="p">?</span> <span class="k">where</span> <span 