code: @Override
      public void exportNamespace(final String prefix, final StringBuilder out)
      {
          for (int d = 0; d < size(); d++)
          {
              final StringBuilder pre = new StringBuilder();
              pre.append(prefix);
              if (isPositional())
                  pre.append("");
              else if (keychar != null)
                  pre.append(keychar.charValue());
              else if (keyword != null)
                  pre.append(keyword);
              if (isMultiple())
                  pre.append("[").append(d).append("]");
              exportNamespaceData(pre.toString(), out, d);
          }
      }
docs: {@inheritDoc}