[Modeling] Class Diagram Specification

[Wagner, G.R.]

> We need to define an Agent Diagram (I will not use the term class 
> diagram since agent is not a class!!). 

We may call this "AUML Agent Diagram", but it will have to be
a form (extension of UML) class diagrams. Of course, an agent
is not a class (since it's an individual, while a UML class 
represents a universal), but an agent type is something like 
a UML class, and we should either use a UML class stereotype
in a UML Profile or a metaclass in a MOF metamodel for
modeling the features (attributes, operations, associations) 
of agent types compatibly with those of object types.
 
> These tasks can be grouped semantically together to form roles. 

How to model roles is an additional (difficult) issue.
 
-Gerd