// to the sources won't cause any issues.
            unit.addSources(new File[]{new File("ForceStubGeneration.java")});
        }
        unit.addSources(getSortedSourceFiles(spec));

        unit.setCompilerFactory(new JavaCompilerFactory() {
            @Override
            public JavaCompiler createCompiler(final CompilerConfiguration config) {
                return new JavaCompiler() {
                    @Override