using System;

​

class Account {

    public string GetLoginPhone() => "Foo";

    public bool LoginPhoneIsVerified() => true;

    public bool LoginEmailIsVerified() => false;

}

​

class DataModel {

    public DateTime EmailAddressVerifiedAt => new DateTime();

}

public class Program

{

    private static Account externalAccount = new Account();

    private static DataModel dataModel = null;

    public class TestClass{

        public object LoginPhone{get;set;}      

        public object LoginPhoneIsVerified{get;set;}

        public object EmailAddressIsVerified{get;set;}

​

    }

    public static void Main()

    {

        //var result = LambdaFactoryMethod();

        // produce identic result

        var result = FactoryMethod();

    }

    static TestClass LambdaFactoryMethod() => 

        new TestClass()

            {

                LoginPhone = externalAccount?.GetLoginPhone(),

                LoginPhoneIsVerified = externalAccount?.LoginPhoneIsVerified(),

                EmailAddressIsVerified = externalAccount?.LoginEmailIsVerified() == true ||

                    dataModel.EmailAddressVerifiedAt != null

            };

    static TestClass FactoryMethod(){

        var result = new TestClass()

        {

            LoginPhone = externalAccount?.GetLoginPhone(),

            LoginPhoneIsVerified = externalAccount?.LoginPhoneIsVerified(),

            EmailAddressIsVerified = externalAccount?.LoginEmailIsVerified() == true ||

                dataModel.EmailAddressVerifiedAt != null

        };

        return result;

    }

}