code: @Override
      public Object readValue(final Attribute _attribute,
                              final List<Object> _objectList)
          throws EFapsException
      {
          final List<Object[]> ret = new ArrayList<>();
          for (final Object object : _objectList) {
              final Object[] temp = (Object[]) object;
              final Object numerator = readValue(temp[0]);
              final Object denominator = readValue(temp[1]);
              ret.add(new Object[] { numerator, denominator });
          }
          return _objectList.size() > 0 ? (ret.size() > 1 ? ret : ret.get(0)) : null;
      }
docs: {@inheritDoc}