partial void DeleteVisit(Visit instance);
 partial void UpdateVisit(Visit instance);
 private void detach_Visits(Visit entity)
 {
     this.SendPropertyChanging();
     entity.Shove = null;
 }
 partial void InsertVisit(Visit instance);
 private void attach_Visits(Visit entity)
 {
     this.SendPropertyChanging();
     entity.Shove = this;
 }