code: public  List<String[]> getForwardedAttributeDataForDevice(Database database, String deviceName) throws DevFailed {
          DeviceData argIn = new DeviceData();
          argIn.insert(deviceName);
          DeviceData argOut = database.command_inout("DbGetForwardedAttributeListForDevice", argIn);
          String[] array = argOut.extractStringArray();
          ArrayList<String[]> list = new ArrayList<String[]>();
          for (int i=0 ; i<array.length/3 ; i++) {
              list.add(new String[] { array[3*i], array[3*i+1], array[3*i+2] });
          }
          return list;
      }
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