Type MethodFoundationEssentials isoRegions(ofCategory:) iOS 26.0+ iPadOS 26.0+ Mac Catalyst 26.0+ macOS 26.0+ tvOS 26.0+ visionOS 26.0+ watchOS 26.0+ An array of regions matching the specified categories. static func isoRegions(ofCategory category: Locale.Region.Category) -> [Locale.Region]