"An official duty that is imposed upon the person by law or is clearly inherent in the nature of the person's office" means one or more unspecified duties that are so essential to the accomplishment of the purposes for which the office was created that it is clearly inherent in the nature of the office.
"Official function" means the decision, opinion, recommendation, vote, or other exercise or performance of duty of a public servant.
HRS § 710-1010.2