private Caset Eat(Caset caset)
 {
     caset.PropertyChanged += caset_PropertyChanged;
     return caset;
 }
 public static Caset LoadFrom(String fp)
 {
     Caset c = new Caset();
     c.Load(fp);
     return c;
 }
 public void CloseMe()
 {
     oc.Clear();
     c1 = new Caset();
     c2 = new Caset();
 }