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Instance MethodFoundationEssentials

identifier(_:)

iOS 16.0+ iPadOS 16.0+ Mac Catalyst 16.0+ macOS 13.0+ tvOS 16.0+ watchOS 9.0+
Returns the ISO code of the given identifier type. Returns nil if the language isn’t a valid ISO language, or if the specified identifier type isn’t available to the language.
func identifier(_ type: Locale.LanguageCode.IdentifierType) -> String?