readAttributeEffectiveOperationMode(completion:)
Declaration
func readAttributeEffectiveOperationMode(completion: @escaping @Sendable (NSNumber?, (any Error)?) -> Void)func readAttributeEffectiveOperationMode() async throws -> NSNumberfunc readAttributeEffectiveOperationMode(completion: @escaping @Sendable (NSNumber?, (any Error)?) -> Void)func readAttributeEffectiveOperationMode() async throws -> NSNumber