Martin Conway (Fine Gael) | Oireachtas source

I see the logic in using the word "required", to be frank. I would like a little more definition of a public body. For example, is Dublin Bus considered a public body? What happens if somebody gets on a bus that belongs to Dublin Bus? I have probably stretched this matter a bit. I would like clarity on exactly what is a prescribed public body before I sit comfortably with the word "required".