The judgement references 12 Acts and over one hundred cases were cited. The judgement would seem to indicate that this is legislated. Perhaps not explicitly, bu

The judgement references 12 Acts and over one hundred cases were cited. The judgement would seem to indicate that this is legislated. Perhaps not explicitly, but Australia practices common law, so this is the normal process. That said, I'd expect something like this to be appealed to the High Court.