Debugging / viewing the source of the generated GWT Java code

What are my options for viewing the generated code from my custom GWT generator (com.google.gwt.core.ext.Generator).

I am creating my own source, which prints the source to system.out, etc., which I managed to do, but it all seems very difficult and not very easy to use.

Sometimes I just break the generated code specifically so that the broken file is printed in the temp folder, it works quite well.

There must be a better way ... I'm sure something is missing.