The employees of the Georgia Building Authority may serve as employees of the agency. When performing agency functions, they shall be deemed to be employees of and under the control of the agency, and all activities by them and of the agency for any purpose whatsoever shall be deemed to be the activities of the agency and the state and not the activities of the Georgia Building Authority. The Georgia Building Authority further may cooperate with the agency by providing or transferring to it funds, equipment, and facilities, but in no event shall the activities and undertakings of the agency be deemed to be the activities of the Georgia Building Authority, directly or indirectly.