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Instance Method

appendInterpolation(yearForWeekOfYear:)

iOS 15.0+ iPadOS 15.0+ Mac Catalyst 15.0+ macOS 12.0+ tvOS 15.0+ watchOS 8.0+
Appends a year-for-week-of-year symbol to the format string.
mutating func appendInterpolation(yearForWeekOfYear: Date.FormatStyle.Symbol.YearForWeekOfYear)