Any city of the 1st class may, at its option, act under ss. 27.08, 27.09, 27.10, 27.11, 27.12 and 27.14 or any part thereof, or under any other law applicable to any such city of the 1st class.
Wis. Stat. § 27.07
First class city option
1983 a. 192.
Official source: Wisconsin State Legislature. Reproduced from public-domain Wisconsin statutes; confirm against the official source for the current text. Not legal advice.