In Dept. of Revenue v. Southern Union Gas Co., 119 Ariz. 512, 582 P.2d 158 (1978), the Arizona Supreme Court held that a statute that directed the superior court to hear tax appeals within ninety days after they were docketed was directory and not mandatory and therefore did not require dismissal for its violation. Id. at 514, 582 P.2d at 160. The court in Southern Union did not address involuntary dismissal pursuant to Arizona Rule of Civil Procedure 41(b), except to note that a violation of the ninety-day statutory provision, without more, did not amount to an unreasonable delay from which it could be concluded that a party had abandoned his claim. Id.