eyword">open </span><span class="token keyword">override </span><span class="token keyword">fun </span><a href="decode-element-index.html"><span class="token function">decodeElementIndex</span></a><span class="token punctuation">(</span><span class="parameters "><span class="parameter ">descriptor<span class="token operator">: </span><span data-unresolved-link="kotlinx.serialization.descriptors/SerialDescriptor///PointingToDeclaration/">SerialDescriptor</span></span></span><span class="token punctuation">)<