static UBigIntHandle()
 {
     _engine            = new UBigIntEngine();
     _disposable_object = _engine;
 }
 public UBigIntHandle(IntPtr native_handle, IUBigIntDisposable disposable_object)
 {
     _is_disposed       = false;
     _disposable_object = disposable_object;
     NativeHandle       = native_handle;
 }