def is_interesting(clazz):
    """Test if given class is interesting from an Android PoV."""

    if clazz.pkg.name.startswith("java"): return False
    if clazz.pkg.name.startswith("junit"): return False
    if clazz.pkg.name.startswith("org.apache"): return False
    if clazz.pkg.name.startswith("org.xml"): return False
    if clazz.pkg.name.startswith("org.json"): return False
    if clazz.pkg.name.startswith("org.w3c"): return False
    if clazz.pkg.name.startswith("android.icu."): return False
    return True