For the purposes of this Part, relevant Commonwealth body means:
(a) a Department that is specified in the rules; or
(b) a body that is:
(i) established by a law of the Commonwealth; and
(ii) specified in the rules; or
(c) if:
(i) no rules are in force for the purposes of paragraph (a); and
(ii) no rules are in force for the purposes of paragraph (b);
ASD.