prepareFilePatterns(recompilationSpec.getClassesToCompile(), recompilationSpec.getSourcePaths(), classesToDelete, sourceToCompile);
        spec.setSourceFiles(narrowDownSourcesToCompile(sourceTree, sourceToCompile));
        includePreviousCompilationOutputOnClasspath(spec);
        addClassesToProcess(spec, recompilationSpec);
        spec.setClassesToCompile(recompilationSpec.getClassesToCompile());

     * We only need them in {@link CompilationClassBackupService} so we know what files don't need a backup.
     */
    Set<String> getClassesToCompile();

    List<File> getModulePath();

    void setModulePath(List<File> modulePath);

    default boolean annotationProcessingConfigured() {

    }

    @Override
    public void setClassesToCompile(Set<String> classes) {
        this.classesToCompile = classes;
    }

    @Override
    public Set<String> getClassesToCompile() {
        return classesToCompile;
    }

    @Override
    public List<File> getModulePath() {
        if (modulePath == null || modulePath.isEmpty()) {