if (this.props.asyncRowPerfEventName) {
      this._perfUpdateID = g_perf_update_id++;
      this._asyncCookie = Systrace.beginAsyncEvent(
        this.props.asyncRowPerfEventName + this._perfUpdateID
      );
      // $FlowFixMe(>=0.28.0)
      infoLog(`perf_asynctest_${this.props.asyncRowPerfEventName}_start ${this._perfUpdateID} ` +
        `${Date.now()}`);
    }
Used to invalidate the layout so the parent knows it needs to compensate for the height in the
placeholder size.