ObjectInitializer.cs

public class User
{
  public string Email {get; set;}
  public string FirstName {get; set;}
  public string LastName {get; set;}
  public string Password {get; set;}
}

public class UserLogic
{
  public void CreateUser()
  {
    var u = new User{
      Email = "nate@example.com",
      FirstName = "Nate"
    };
  }
}