It's still early days with the Australian one but we're seeing that it has some bite and some effect and, as Professor Burton has mentioned, it certainly got the attention of the Chinese.
What I think is important is it makes explicit what should be explicit anyway, that if you've had a senior position in government, certainly if you've been a minister, you need to disclose if you're on the payroll of a foreign state and acting on that behalf, and failure to do that should result in criminal sanctions.
I think the Australians have taken tough measures but they are absolutely the right measures.