Create a UILocalizedIndexedCollation for a specific locale

UILocalizedIndexedCollation+Locale.swift

extension UILocalizedIndexedCollation {

    static func collation(for locale: Locale) -> UILocalizedIndexedCollation? {
        let collationPlistURL = Bundle(for: UILocalizedIndexedCollation.self).url(
            forResource: "UITableViewLocalizedSectionIndex",
            withExtension: "plist",
            subdirectory: nil,
            localization: locale.identifier
        )

        guard let collationPlistURL, let collationDict = try? NSDictionary(contentsOf: collationPlistURL, error: ()) else {
            return nil
        }

        let collation = UILocalizedIndexedCollation.perform(Selector(("collationWithDictionary:")), with: collationDict).takeUnretainedValue()
        return collation as? UILocalizedIndexedCollation
    }

}