public java.util.List<String> getAvailabilityZones() {
        if (availabilityZones == null) {
            availabilityZones = new com.amazonaws.internal.SdkInternalList<String>();
        }
        return availabilityZones;
    }
<p>
A list of Availability Zones (AZs) where you specifically want to create DB instances in the DB cluster.
</p>
<p>
For information on AZs, see <a href=
"https://docs.aws.amazon.com/AmazonRDS/latest/AuroraUserGuide/Concepts.RegionsAndAvailabilityZones.html#Concepts.RegionsAndAvailabilityZones.AvailabilityZones"
>Availability Zones</a> in the <i>Amazon Aurora User Guide</i>.
</p>
<p>
Valid for Cluster Type: Aurora DB clusters only
</p>
<p>
Constraints:
</p>
<ul>
<li>
<p>
Can't specify more than three AZs.
</p>
</li>
</ul>

@return A list of Availability Zones (AZs) where you specifically want to create DB instances in the DB
        cluster.</p>
        <p>
        For information on AZs, see <a href=
        "https://docs.aws.amazon.com/AmazonRDS/latest/AuroraUserGuide/Concepts.RegionsAndAvailabilityZones.html#Concepts.RegionsAndAvailabilityZones.AvailabilityZones"
        >Availability Zones</a> in the <i>Amazon Aurora User Guide</i>.
        </p>
        <p>
        Valid for Cluster Type: Aurora DB clusters only
        </p>
        <p>
        Constraints:
        </p>
        <ul>
        <li>
        <p>
        Can't specify more than three AZs.
        </p>
        </li>
aws-java-sdk-rds/src/main/java/com/amazonaws/services/rds/model/CreateDBClusterRequest.java