spanFinished(span) {
		if (
			span.tags.eventName == "metrics.trace.span.start" ||
			span.tags.eventName == "metrics.trace.span.finish"
		)
			return;

		const payload = this.generateMetricPayload(span);
		this.broker.emit("metrics.trace.span.finish", payload);
	}
Span is finished.

@param {Span} span
@memberof EventLegacyTraceExporter