§ 21. Same—Validation.

Bonds of the Authority shall be confirmed and validated in accordance with the procedure of the Revenue Bond Law. The petition for validation shall also make party defendant to such action any municipality, county, authority, subdivision or instrumentality of the State of Georgia or the United States Government or any department or agency of the United States Government, if subject to be sued, which has contracted with the Authority for the services and facilities of the project for which bonds are to be issued and sought to be validated and such municipality, county, authority, subdivision or instrumentality shall be required to show cause, if any, why such contract or contracts and the terms of and conditions thereof should not be inquired into by the court and the validity of the terms thereof be determined and the contract or contracts adjudicated as security for the payment of any such bonds of the authority. The judgment of validation shall be final and conclusive with respect to such bonds, against the Authority issuing the same, and against any municipality, county, authority, subdivision or instrumentality of the State of Georgia or the United States government, if a party to the validation proceedings, contracting with the City of Decatur Parking Authority.