public StackConfigurationManager getConfigurationManager() {
        return this.configurationManager;
    }
<p>
The configuration manager. When you update a stack, we recommend that you use the configuration manager to
specify the Chef version: 12, 11.10, or 11.4 for Linux stacks, or 12.2 for Windows stacks. The default value for
Linux stacks is currently 12.
</p>

@return The configuration manager. When you update a stack, we recommend that you use the configuration manager
        to specify the Chef version: 12, 11.10, or 11.4 for Linux stacks, or 12.2 for Windows stacks. The default
        value for Linux stacks is currently 12.
aws-java-sdk-opsworks/src/main/java/com/amazonaws/services/opsworks/model/UpdateStackRequest.java