public String getDefaultRootDeviceType() {
        return this.defaultRootDeviceType;
    }
<p>
The default root device type. This value is the default for all instances in the stack, but you can override it
when you create an instance. The default option is <code>instance-store</code>. 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 the default for all instances in the stack, but you can
        override it when you create an instance. The default option is <code>instance-store</code>. 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/CreateStackRequest.java