Concerning provisions in the open meetings law for an executive session of a local public body, and, in connection therewith, creating a local public body's right to cure a violation of the open meetings law for an executive session, adding prerequisites for a person to challenge a violation by a local public body of the open meetings law for an executive session, and permitting a local public body to recover costs and attorney fees in an action for a violation by a local public body of the executive session provisions if the prerequisites are not met or if the local public body has cured the violation.