private bool ControlViewInSpecificVariation(CourseView.ControlView controlView)
{
if (controlViewsSpecificVariation == controlViewsAllVariationsAndParts)
return true;
foreach (Id<CourseControl> idCourseControl in controlView.courseControlIds) {
if (courseControlIdsSpecificVariation.Contains(idCourseControl))
return true;
}
return false;
}