public void setPreferredMaintenanceWindow(String preferredMaintenanceWindow) {
        this.preferredMaintenanceWindow = preferredMaintenanceWindow;
    }
<p>
The weekly time range, in Universal Coordinated Time (UTC), during which system maintenance can occur.
</p>
<p>
Format: <code> <i>&lt;day&gt;</i>:HH:MM-<i>&lt;day&gt;</i>:HH:MM</code>
</p>
<p>
For the day values, use <code>mon</code> | <code>tue</code> | <code>wed</code> | <code>thu</code> |
<code>fri</code> | <code>sat</code> | <code>sun</code>
</p>
<p>
For example, <code>sun:09:32-sun:10:02</code>
</p>

@param preferredMaintenanceWindow
       The weekly time range, in Universal Coordinated Time (UTC), during which system maintenance can occur.</p>
       <p>
       Format: <code> <i>&lt;day&gt;</i>:HH:MM-<i>&lt;day&gt;</i>:HH:MM</code>
       </p>
       <p>
       For the day values, use <code>mon</code> | <code>tue</code> | <code>wed</code> | <code>thu</code> |
       <code>fri</code> | <code>sat</code> | <code>sun</code>
       </p>
       <p>
       For example, <code>sun:09:32-sun:10:02</code>
aws-java-sdk-securityhub/src/main/java/com/amazonaws/services/securityhub/model/AwsRedshiftClusterDetails.java