In any suit, action or proceedings involving the validity or enforceability of any bond of an authority or the security therefor, any bond reciting in substance that it has been issued by the authority to aid in financing a housing project to provide housing for persons or families of lower income is conclusively deemed to have been issued for a housing project of such character and said project is conclusively deemed to have been planned, located and constructed in accordance with the Housing Authorities Law.
ORS 456.190