SystemFormatStyle.Timer The system timer format style. Declarationstruct Timer TopicsInitializersinit(countingDownIn:showsHours:maxFieldCount:maxPrecision:)init(countingUpIn:showsHours:maxFieldCount:maxPrecision:) RelationshipsConforms ToCopyableDecodableDiscreteFormatStyleEncodableEquatableEscapableFormatStyleHashableSendableSendableMetatype