Manage the logout tasks registered with Horde_Registry.
Session storage key.
Add a class to the logout queue.
The classname to add (or an object of that
class). The class must be able to be
instantiated via Horde_Injector and must
implement the Horde_Registry_Logout_Task
Runs the list of logout tasks and clears the queue.
Return the list of logout tasks.
Set the list of logout tasks.
List of classnames.