using System;

public class Program

{

    public static void Main()

    {

        Console.WriteLine("Hello World");

    }

}

​

interface IExternalValidator 

{

    bool ValidateExternally(string url, string valueToVerify);  

}

​

class RestAPIValidator : IExternalValidator

{

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    public bool ValidateExternally(string url, string valueToVerify)

    {

     ////

    }

}

​

abstract class AbstractValidator

{

   public abstract bool Validate(string toValidate);

   protected bool ValidateWithRestAPI(string url)

   {

      ////

      return restAPIValidator.ValidateExternally(url, valuetoValidate);

   }

}

​

class AdharValidator :AbstractValidator

{

  public bool Validate(string toValidate)

  {

    ValidaValidateWithRestAPI(url,toValidate)

  }

}

​

class PanValidator : AbstractValidator

{

​

  PanValidator(url)

  {

  }

  public bool Validate(string toValidate)

  {

      ValidaValidateWithRestAPI(url,toValidate)

  }

}

​

class ValidatorFactory

{

    public static AbstarctValidator CreateValidator(IdType type)

    {

        if(type == IdType.Adhar) return new AdharValidator(url);

        else if(type == idType.Pan) return new PanValidator(url)

    }

}

​

main()

{

        AvstractValidator validator = 

}

​

interface IConfigManager

{

    bool Export(IList<Configuration>);

    bool Import(IList<Configuration>)

}

​

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​