Case
AttributeScopes.FoundationAttributes.DateFieldAttribute.Field.relatedGregorianYear
iOS 15.0+
iPadOS 15.0+
Mac Catalyst 15.0+
macOS 12.0+
tvOS 15.0+
watchOS 8.0+
For non-Gregorian calendars, this corresponds to the extended Gregorian year in which the calendar’s year begins.
case relatedGregorianYear