Hand-written runtime support for generated Java stub builders. Lives on the consumer's test classpath, so generated sources stay thin. This is a published API: generated code -- and therefore the consumer's own code -- compiles against these classes, so they carry a compatibility obligation the generator itself does not. Nothing that only matters at generate time belongs here.

A project that uses the plugin the way a consumer would, and the only place the plugin actually runs. Everything else is tested by calling the generator directly, which never proves the Mojo can be configured, that the ...