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