Event.Span</a><span class="token operator">?</span><span class="token operator"> = </span>null<span class="token punctuation">, </span></span><span class="parameter ">traceId<span class="token operator">: </span><a href="https://kotlinlang.org/api/core/kotlin-stdlib/kotlin/-string/index.html">String</a><span class="token operator"> = </span>parent?.context?.traceId ?: id</span></span><span class="token punctuation">)</span> : <a href="index.html">TracingEvent.Span</a></div><div class="brief "><p class="para