public void setOffPeakWindow(OffPeakWindow offPeakWindow) {
        this.offPeakWindow = offPeakWindow;
    }
<p>
Off-peak window settings for the domain.
</p>

@param offPeakWindow
       Off-peak window settings for the domain.
aws-java-sdk-opensearch/src/main/java/com/amazonaws/services/opensearch/model/OffPeakWindowOptions.java