src/vs/workbench/contrib/comments/browser/timestamp.ts/TimestampWidget/setTimestamp
class TimestampWidget:	public async setTimestamp(timestamp: Date | undefined) {
		if ((timestamp !== this._timestamp) || (this.useRelativeTimeSetting !== this._useRelativeTime)) {
			this.updateDate(timestamp);
		}
		this._timestamp = timestamp;
		this._useRelativeTime = this.useRelativeTimeSetting;
	}