return undefined;};TraceEventImporter.prototype={__proto__:tr.importer.Importer.prototype,get importerName(){return'TraceEventImporter';},extractSubtraces(){const subtraces=this.subtraces_;this.subtraces_=[];return subtraces;},deepCopyIfNeeded_(obj){if(obj===undefined)obj={};if(this.eventsWereFromString_)return obj;return deepCopy(obj);},deepCopyAlways_(obj){if(obj===undefined)obj={};return deepCopy(obj);},processAsyncEvent(event){const thread=this.model_.getOrCreateProcess(event.p...