public void Remove(Term term)
{
if (term == null)
{
throw new ArgumentNullException("term");
}
if (term.Offerings.Count > 0)
{
throw new ForeignKeyEntityException("The term could not be removed. It has one or more offerins associated with it.");
}
PeriodDateService.RemoveRange(term.PeriodDates);
_termRepository.Remove(term);
}