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<quote>
The behavior of auxiliary classes has changed in Windows Server 2003  
and later. In Windows 2000 Server, changes that are made to an  
auxiliary class affect its parent class as well as all instances of  
the parent object. For example, adding an auxiliary class called pager  
to the structural class user affects all instances of user, which is  
all of the user accounts that are created with the user class.

In Windows Server 2003 and later, auxiliary classes can be assigned  
dynamically to individual instances of classes, rather than being  
applied automatically to all instances. For example, you can assign  
the pager auxiliary class to only those users who need it.
</quote>

Which behavior does Samba4 implement?