Every order, decision, license, or other official act of the commissioner is subject to review in accordance with law. Upon review, the burden of proof lies upon the appellant, and the court shall receive and consider any pertinent evidence which was introduced in the formal hearing before the commissioner, whether oral or documentary, concerning the action of the commissioner under review. The review is limited to a consideration and determination of the question of whether there has been an abuse of discretion on the part of the commissioner in making such order, decision, finding, requirement, or rule.