Sec. 5B. LIABILITY OF CERTAIN PERSONS. (a) The trustees, executive director, and employees of the pension system are fully protected from and free of liability for any action taken or suffered by them that were performed in good faith and in reliance on an actuary, accountant, counsel, or other professional service provider, or in reliance on records provided by the city.

(b) The officers and employees of the city are fully protected and free of liability for any action taken or suffered by the officer or employee, as applicable, in good faith and on reliance on an actuary, accountant, counsel, or other professional service provider.

(c) The protection from liability provided by this section is cumulative of and in addition to any other constitutional, statutory, or common law official or governmental immunity, defense, and civil or procedural protection provided to the city or pension system as a governmental entity and to a city or pension system official or employee as an official or employee of a governmental entity. Except for a waiver expressly provided by this article, this article does not grant an implied waiver of any immunity.