Uses of Class

Packages that use User
Core plug-in that contains the most important domain objects
Automation subsystem that allows you to program your own logic inside the platform.
The automation engine can be accessed through the class Automation

Please note the special annotation AutomationDictionary that is used to automatically put in the Dictionary whatever bean you need.
Contains the definitions of Document and Version as well as other related objects
Container of the security-related interfaces and classes
The pluggable authentication mechanism.
Definition of the User object and ancillary objects
GWT services implementations.