Notice to holders of general obligation bonds to be redeemed; covenant with holders of general obligation refunding bonds.

(1) Prior to the issuance of general obligation refunding bonds, the governing body of the unit shall adopt a resolution electing to call and redeem such portion of the general obligation bonds to be refunded as is to be called for payment prior to the date of their maturity in accordance with the refunding financial plan. The resolution adopted pursuant to this subsection shall authorize and direct the escrow agent, in the name of the unit, to cause notice of such call for redemption to be given as required by law and the terms of the bonds to be refunded.

(2) Upon the issuance of the refunding bonds, the election to call and redeem all or a portion of the general obligation bonds to be refunded and the direction to the escrow agent to cause notice thereof to be given contained in the resolution adopted pursuant to subsection (1) shall become irrevocable, and the provisions of such resolution shall constitute a contract with the holders of general obligation bonds to be refunded and the general obligation refunding bonds.