public String getOutpostArn() {
        return this.outpostArn;
    }
<p>
The Amazon Resource Name (ARN) of the Outpost on which to create the volume.
</p>
<p>
If you intend to use a volume with an instance running on an outpost, then you must create the volume on the same
outpost as the instance. You can't use a volume created in an Amazon Web Services Region with an instance on an
Amazon Web Services outpost, or the other way around.
</p>

@return The Amazon Resource Name (ARN) of the Outpost on which to create the volume.</p>
        <p>
        If you intend to use a volume with an instance running on an outpost, then you must create the volume on
        the same outpost as the instance. You can't use a volume created in an Amazon Web Services Region with an
        instance on an Amazon Web Services outpost, or the other way around.
aws-java-sdk-ec2/src/main/java/com/amazonaws/services/ec2/model/CreateVolumeRequest.java