public Stella_Object walkAtomicTree(Object [] MV_returnarray) {
    { Stella_Object self = this;

      { OutputStringStream stream000 = OutputStringStream.newOutputStringStream();

        stream000.nativeStream.print("walk-atomic-tree: Not defined on `" + self + "'");
        throw ((StellaException)(StellaException.newStellaException(stream000.theStringReader()).fillInStackTrace()));
      }
    }
  }