public void ChangeHospitalResidence(IHospitalResidence oldHospitalResidence, IHospitalResidence newHospitalResidence)
 {
     oldHospitalResidence.ChangeResidence(newHospitalResidence);
 }
 public void ChangeResidence(IHospitalResidence newResidence)
 {
     _hospitalResidence.ChangeResidence(newResidence);
 }