/// <summary>
/// Добавить урок в подгруппах
/// </summary>
/// <param name="lesson"></param>
public void AddOneGroupLesson(PrimaryLesson lesson)
{
LessonsInGroups.Add(lesson);
IsWholeClassLesson = false;
}
public Lesson(PrimaryLesson lesson)
{
WholeClassLesson = lesson;
IsWholeClassLesson = true;
}