(1)  Subject to subsection (2) , the consent of a person to be a group member is not required.

(2)  None of the following is a group member in representative proceedings unless the person gives consent in writing to being so:

(a) the Commonwealth, a State or a Territory;

(b) a Minister of the Commonwealth, a State or a Territory;

(c) a body corporate established for a public purpose by a law of the Commonwealth, a State or a Territory, other than an incorporated company or incorporated association;

(d) an officer of the Commonwealth, a State or a Territory, in his or her capacity as an officer.