public String getDeviceName() {
        return this.deviceName;
    }
<p>
The device name assigned to the volume (for example, <code>/dev/sdh</code> or <code>xvdh</code>). For more
information, see <a href="https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/device_naming.html">Device naming
on Linux instances</a> in the <i>Amazon EC2 User Guide for Linux Instances</i>.
</p>
<note>
<p>
To define a block device mapping, set the device name and exactly one of the following properties:
<code>Ebs</code>, <code>NoDevice</code>, or <code>VirtualName</code>.
</p>
</note>

@return The device name assigned to the volume (for example, <code>/dev/sdh</code> or <code>xvdh</code>). For
        more information, see <a
        href="https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/device_naming.html">Device naming on Linux
        instances</a> in the <i>Amazon EC2 User Guide for Linux Instances</i>.</p> <note>
        <p>
        To define a block device mapping, set the device name and exactly one of the following properties:
        <code>Ebs</code>, <code>NoDevice</code>, or <code>VirtualName</code>.
        </p>
aws-java-sdk-autoscaling/src/main/java/com/amazonaws/services/autoscaling/model/BlockDeviceMapping.java