SECTION 2.2  INTERGOVERNMENTAL COOPERATION.
   The city may join with any municipal corporation or with any other unit or agency of government, whether local, state, or federal, or with any number or combination thereof, by contract or otherwise, as may be permitted by law, in the ownership, operation, or performance, jointly or by one or more on behalf of all, of any property, facility or service which each would have the power to own, operate, or perform separately.