16-5-204. Prior securities; limitations; exceptions. This act validates any public securities heretofore issued and any acts and proceedings heretofore taken which the legislature could have supplied or provided for in the law under which the public securities were issued and the acts or proceedings were taken. This act is limited to the validation of public securities, acts and proceedings to the extent they can be effectuated under the state and federal constitutions. This act does not validate, ratify, approve, confirm or legalize any public security, act, proceeding or other matter the legality of which is being contested in any legal proceeding now pending and undetermined, and does not confirm, validate or legalize any public security, act, proceedings, or other matter which has heretofore been determined in any legal proceeding to be illegal, void or ineffective.