C# forward engineering with FW classes (System.xx)

[Guillaume]

Hi,

I'm looking for an advice to deal with dotNet classes such as System.Exception, System.Enum, etc. with EA C# forward engineering.
I set up my design model with the namespaces and C# implementation classes. I then run a forward engineering that generates the initial code.
How can I get a number of classes (not all of them) to have the following generated:
using System.Exception;

Do I need to create somewhere system classes associated with my class (having the option not to generate code for these classes), or is there an easier way to go about this?

Thanks