public class CustomFreemarkerManager extends org.apache.struts2.views.freemarker.FreemarkerManager
This is an example of a custom FreemarkerManager, mean to be
instantiated through Spring.
It will add into Freemarker's model
an utility class called {@link CustomFreemarkerManagerUtil} as a simple
example demonstrating how to extends FreemarkerManager.
The {@link CustomFreemarkerManagerUtil} will be created by Spring and
injected through constructor injection.