.map(Object::toString)
            .collect(Collectors.toList());

        validateCompilerArgs(compArgs);

        addLauncherOptions();
        addMainOptions(compArgs);
        addClasspath();
        addUserProvidedArgs(compArgs);
        addSourceFiles();

        return args;
    }

    private void validateCompilerArgs(List<String> compilerArgs) {
        for (String arg : compilerArgs) {

        // where the transform class is loaded from)
        for (File file : spec.getCompileClasspath()) {
            astTransformClassLoader.addClasspath(file.getPath());
        }
        JavaAwareCompilationUnit unit = new JavaAwareCompilationUnit(configuration, compileClasspathClassLoader) {
            @Override