}

    /**
     * The directories containing the production sources.
     * Must not be null.
     */
    public Set<Path> getSourceFolders() {
        return sourceFolders;
    }

    public void setSourceFolders(Set<Path> sourceFolders) {
        this.sourceFolders = sourceFolders;
    }

    /**
     * The directories containing the test sources.
     * Must not be null.
     */