using java generation subsystem

Hello, i am a university student and i'm currently working in a proyect  to
generate junit test cases taking Argo Class Diagrams as the input, the thing
is i need to have java class skeletons compiled, then to read that compiled
clases using java reflection api, I've downloaded the source code of Argo,
it's quite large :), I know that it has a java code generator as a
subsystem, the thing is how do I pass the xmi file generated by Argo to that
subsystem, so i can get the compiled classes skeletons that i need. Thank
you for your time, by the way i'm --> Jorge Bendahan from Asuncion,
Paraguay, South America.