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