The city commission shall have continuous power to amend this article as provided by its Charter, including the power to suspend or discontinue contributions or to terminate the plan, provided that no such amendment shall (a) revest any part of the pension fund of the city, or (b) make possible the diversion of the pension fund, or any part thereof, to any person other than the exclusive benefit of the members of the plan.
(Code 1958, § 21-28)