public void setPreferredAvailabilityZone(String preferredAvailabilityZone) {
        this.preferredAvailabilityZone = preferredAvailabilityZone;
    }
<p>
The name of the Availability Zone in which the source cluster is located.
</p>

@param preferredAvailabilityZone
       The name of the Availability Zone in which the source cluster is located.
aws-java-sdk-elasticache/src/main/java/com/amazonaws/services/elasticache/model/Snapshot.java