public String getVersion() {
        return this.version;
    }
<p>
The launch template version number, <code>$Latest</code>, or <code>$Default</code>. You must specify a value,
otherwise the request fails.
</p>
<p>
If the value is <code>$Latest</code>, Amazon EC2 uses the latest version of the launch template.
</p>
<p>
If the value is <code>$Default</code>, Amazon EC2 uses the default version of the launch template.
</p>

@return The launch template version number, <code>$Latest</code>, or <code>$Default</code>. You must specify a
        value, otherwise the request fails.</p>
        <p>
        If the value is <code>$Latest</code>, Amazon EC2 uses the latest version of the launch template.
        </p>
        <p>
        If the value is <code>$Default</code>, Amazon EC2 uses the default version of the launch template.
aws-java-sdk-ec2/src/main/java/com/amazonaws/services/ec2/model/FleetLaunchTemplateSpecificationRequest.java