The right of a person to a pension, an annuity or a retirement allowance, to the return of contributions, the pension, annuity or retirement allowance itself, any optional benefit, any other right or benefit accrued or accruing to any person under the provisions of this Article and the moneys in the fund created by this Article shall not be subject to execution, garnishment, attachment or any other process whatsoever and shall be unassignable, except as specifically provided by this Article.
(Bill No. 1125, Ord. 4073(C.S.), Sec. 5)