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