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