public String getDefaultRootDeviceType() {
        return this.defaultRootDeviceType;
    }
<p>
The default root device type. This value is used by default for all instances in the stack, but you can override
it when you create an instance. For more information, see <a
href="https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/ComponentsAMIs.html#storage-for-the-root-device"
>Storage for the Root Device</a>.
</p>

@return The default root device type. This value is used by default for all instances in the stack, but you can
        override it when you create an instance. For more information, see <a href=
        "https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/ComponentsAMIs.html#storage-for-the-root-device"
        >Storage for the Root Device</a>.
@see RootDeviceType
aws-java-sdk-opsworks/src/main/java/com/amazonaws/services/opsworks/model/UpdateStackRequest.java