Any other provision of law to the contrary notwithstanding, any public retirement system or pension fund supported wholly or partially by public funds shall be subject to the provisions of this chapter. This Code section applies, without limitation, to the Georgia Municipal Employees Benefit System created by Chapter 5 of this title and to any association of like political subdivisions which contracts with its members for the pooling of assets. This Code section shall not apply to any defined contribution retirement system.
OCGA § 47-20-4