[Pharo-project] Excluding an autogenerated methods from MC package. How?

Hello all, say, i have some methods having automatically generated sources, and i want them to be not included into a package, since they are generated/refreshed anyways once package loaded. Is there a way to tell MC 1. to exclude such methods, when writing a package 2. to ignore any changes to these methods and don't mark a package as dirty ? -- Best regards, Igor Stasenko AKA sig.