import Flutter import UIKit public class SwiftFlutterOpensslCryptoPlugin: NSObject, FlutterPlugin { public static func register(with registrar: FlutterPluginRegistrar) { let channel = FlutterMethodChannel(name: "flutter_openssl_crypto", binaryMessenger: registrar.messenger()) let instance = SwiftFlutterOpensslCryptoPlugin() registrar.addMethodCallDelegate(instance, channel: channel) } public func handle(_ call: FlutterMethodCall, result: @escaping FlutterResult) { result("iOS " + UIDevice.current.systemVersion) } }