How to create Singleton class in dart language

 // This Main() Function of Dart

void main(){

   //****************************************

  MySingleton mS=MySingleton();

  mS.doSomething();

  mS.name="Surya Prakash";

  mS.age="29"; 

//****************************************************** 

}

//*********************** Singlton Class ***********************************

class MySingleton {

  // Private constructor to prevent external instantiation

  MySingleton._privateConstructor();

  // The single instance of the class

  static final MySingleton _instance = MySingleton._privateConstructor();

  // Factory constructor to provide access to the instance

  factory MySingleton() {

    return _instance;

  }

  // Add your methods and properties here

  void doSomething() {

    print('Singleton is doing something);

  }

  //  Create Varialbles  

  String? name;

  String? age;

   

}