@staticmethod
def watch_var(id, cond, wait_for_roundtrip, handler):
    return {'type': 'watch', 'id': id, 'cond': cond, 'waitForRoundtrip': wait_for_roundtrip, 'handler': handler}
@staticmethod
def watch_var(id, cond, wait_for_roundtrip, handler):
    return {'type': 'watch', 'id': id, 'cond': cond, 'waitForRoundtrip': wait_for_roundtrip, 'handler': handler}