public void setAvailabilityZones(java.util.Collection<String> availabilityZones) {
        if (availabilityZones == null) {
            this.availabilityZones = null;
            return;
        }

        this.availabilityZones = new java.util.ArrayList<String>(availabilityZones);
    }
<p>
The availability zones for the Elasticsearch domain. Exists only if the domain was created with VPCOptions.
</p>

@param availabilityZones
       The availability zones for the Elasticsearch domain. Exists only if the domain was created with
       VPCOptions.
aws-java-sdk-elasticsearch/src/main/java/com/amazonaws/services/elasticsearch/model/VPCDerivedInfo.java