Section 118 - Custody and supervision of persons in Westchester county correctional facilities1. The duty of maintaining the custody and supervision of persons detained or confined in a local correctional facility as defined in subdivision sixteen of section two of this chapter and such facility is located in the county of Westchester shall be performed solely by correction officers of the Westchester county correction department. This duty, in whole or in part, shall not be delegated, transferred or assigned.2. As used in this section, "correction officer" of the Westchester county correction department means a correction officer, correction officer-sergeant, correction officer-captain, assistant warden, associate warden or warden.