public XOUT(T value)
 {
     Obj = new XOBJ <T>(value);
 }
 public XREF(T value)
 {
     Obj = new XOBJ <T>(value);
 }
 public XREF()
 {
     Obj = new XOBJ <T>();
 }
 public XOUT()
 {
     Obj = new XOBJ <T>();
 }