public void setAvailabilityZoneId(String availabilityZoneId) {
        this.availabilityZoneId = availabilityZoneId;
    }
<p>
The unique and consistent identifier of the Availability Zone in which the file system is located, and is valid
only for One Zone file systems. For example, <code>use1-az1</code> is an Availability Zone ID for the us-east-1
Amazon Web Services Region, and it has the same location in every Amazon Web Services account.
</p>

@param availabilityZoneId
       The unique and consistent identifier of the Availability Zone in which the file system is located, and is
       valid only for One Zone file systems. For example, <code>use1-az1</code> is an Availability Zone ID for
       the us-east-1 Amazon Web Services Region, and it has the same location in every Amazon Web Services
       account.
aws-java-sdk-efs/src/main/java/com/amazonaws/services/elasticfilesystem/model/UpdateFileSystemResult.java