Instance Method
localizedString(forIdentifier:)
iOS 8.0+
iPadOS 8.0+
Mac Catalyst 8.0+
macOS 10.10+
tvOS 9.0+
watchOS 2.0+
Returns a localized string for a specified locale identifier.
func localizedString(forIdentifier identifier: String) -> String?
Discussion
For example, in the “en” locale, the result for "es" is "Spanish".