Any case filed may be referred to mediation at the discretion of the court, but under no circumstances may the following categories of actions be referred:
(a) criminal and post-conviction cases;
(b) habeas corpus and extraordinary writs;
(c) civil or criminal contempt;
(d) involuntary civil commitments of sexually violent predators;
(e) collateral criminal cases; and
(f) other matters as may be specified by administrative order.