Retrieve Categories for a given Jive container.

I am currently working on a custom widget plugin using the core Jive API. One of the requirement is to fetch the categories for a given space or project. I have looked at the Java docs but cannot find any class / method that retrieves the categories. Anyone know how to fetch categories for a given space, etc? Like for e.g. to get the Activity stream, you have a Activity Manager:

WidgetContext context = [some value];

ActivityManager activityManager = JiveApplication.getContext().getActivityManager();

Iterable<Activity> activityList = activityManager.getRecentActivity(context.getContainer());

Is there something similar for categories?

Thanks,

~Sunil