§ 22. Effect of local laws on acts of legislature or prior local laws or ordinances. 1. In adopting a local law changing or superseding any provision of a state statute or of a prior local law or ordinance, the legislative body shall specify the chapter or local law or ordinance, number and year of enactment, section, subsection or subdivision, which it is intended to change or supersede, but the failure so to specify shall not affect the validity of such local law. Such a superseding local law may contain the text of such statute, local law or ordinance, section, subsection or subdivision and may indicate the changes to be effected in its text or application to such local government by enclosing in brackets, or running a line through, the matter to be eliminated therefrom and italicizing or underscoring new matter to be included therein.

2. No local law shall supersede any provision of a state statute except as authorized by the constitution, this chapter or any other state statute.