Each participating judge, by virtue of the payment of the employee contributions required to be paid to this system, has a vested interest in the refunds provided under this Article and, in consideration of that interest, authorizes the deductions from salary of all contributions payable to this system under this Article. Payment of salary as prescribed by law or as contracted by an employer, less the amounts of contributions provided in this Article, shall, together with such special vested rights in the refunds, be a full and complete discharge of all claims of payments for service rendered by a judge during the period covered by any such payment.