[great-users] Abort a transformation

[Achim Gädke]

Hi there!

During the modelling phase I try to prevent ill designed models with
OCLs in GME.

In the the model transformation I do (often similar) assumptions, which
I would test with an assert statement in other programming languages.

Is there a concept comparable to assertions in GReAT?
For my project it would be sufficient to modify the exit code.

Cheers, Achim