The governing body of any county, municipality or school district in this state may, with the approval of the department of finance and administration, issue bonds in such form as the governing body may determine, to be denominated refunding bonds, for the purpose of refunding any of the general obligation bonded indebtedness of the county, municipality or school district which has or will become due and payable or which has or will become payable at the option of the county, municipality or school district or by consent of the bondholders or by any lawful means.
NMS § 6-15-11