/// <see cref="PersonDAL.GetPersonByNurseID(Nurse)"/>
 public Person GetPersonByNurseID(Nurse nurse)
 {
     if (nurse == null || nurse.ID == null)
     {
         throw new ArgumentNullException("nurse and its id cannot be null");
     }
     return(PersonDAL.GetPersonByNurseID(nurse));
 }