public static CoursesCounter Initialize(string id)
{
return(new CoursesCounter(new CoursesCounterId(id), CoursesCounterTotal.Initialize(), new List <CourseId>()));
}
public CoursesCounter(CoursesCounterId id, CoursesCounterTotal total, List <CourseId> existingCourses)
{
Id = id;
Total = total;
ExistingCourses = existingCourses;
}