public CreateDBClusterRequest withPreferredMaintenanceWindow(String preferredMaintenanceWindow) {
        setPreferredMaintenanceWindow(preferredMaintenanceWindow);
        return this;
    }
<p>
The weekly time range during which system maintenance can occur.
</p>
<p>
Valid for Cluster Type: Aurora DB clusters and Multi-AZ DB clusters
</p>
<p>
The default is a 30-minute window selected at random from an 8-hour block of time for each Amazon Web Services
Region, occurring on a random day of the week. To see the time blocks available, see <a href=
"https://docs.aws.amazon.com/AmazonRDS/latest/AuroraUserGuide/USER_UpgradeDBInstance.Maintenance.html#AdjustingTheMaintenanceWindow.Aurora"
> Adjusting the Preferred DB Cluster Maintenance Window</a> in the <i>Amazon Aurora User Guide</i>.
</p>
<p>
Constraints:
</p>
<ul>
<li>
<p>
Must be in the format <code>ddd:hh24:mi-ddd:hh24:mi</code>.
</p>
</li>
<li>
<p>
Days must be one of <code>Mon | Tue | Wed | Thu | Fri | Sat | Sun</code>.
</p>
</li>
<li>
<p>
Must be in Universal Coordinated Time (UTC).
</p>
</li>
<li>
<p>
Must be at least 30 minutes.
</p>
</li>
</ul>

@param preferredMaintenanceWindow
       The weekly time range during which system maintenance can occur.</p>
       <p>
       Valid for Cluster Type: Aurora DB clusters and Multi-AZ DB clusters
       </p>
       <p>
       The default is a 30-minute window selected at random from an 8-hour block of time for each Amazon Web
       Services Region, occurring on a random day of the week. To see the time blocks available, see <a href=
       "https://docs.aws.amazon.com/AmazonRDS/latest/AuroraUserGuide/USER_UpgradeDBInstance.Maintenance.html#AdjustingTheMaintenanceWindow.Aurora"
       > Adjusting the Preferred DB Cluster Maintenance Window</a> in the <i>Amazon Aurora User Guide</i>.
       </p>
       <p>
       Constraints:
       </p>
       <ul>
       <li>
       <p>
       Must be in the format <code>ddd:hh24:mi-ddd:hh24:mi</code>.
       </p>
       </li>
       <li>
       <p>
       Days must be one of <code>Mon | Tue | Wed | Thu | Fri | Sat | Sun</code>.
       </p>
       </li>
       <li>
       <p>
       Must be in Universal Coordinated Time (UTC).
       </p>
       </li>
       <li>
       <p>
       Must be at least 30 minutes.
       </p>
       </li>
@return Returns a reference to this object so that method calls can be chained together.
aws-java-sdk-rds/src/main/java/com/amazonaws/services/rds/model/CreateDBClusterRequest.java