/**
     * Creates package/updates statically known classes info. Uses
     * {@link PyJavaPackage#addPackage(java.lang.String, java.lang.String) },
     * {@link PyJavaPackage#addPlaceholders}.
     *
     * @param name package name
     * @param classes comma-separated string
     * @param jarfile involved jarfile; can be null
     * @return created/updated package
     */
    public PyJavaPackage makeJavaPackage(String name, String classes,
            String jarfile) {
...