code: @Override
      public Parameter convert(final XBELParameter source) {
          if (source == null) return null;
  
          // Destination type
          Parameter dest = new Parameter();
  
          if (source.isSetNs()) {
              String prefix = source.getNs();
              Namespace ns = new Namespace(prefix, UNRESOVLED_NS);
              dest.setNamespace(ns);
          }
  
          if (source.isSetValue()) {
              dest.setValue(CommonModelFactory.getInstance().resolveValue(
                      source.getValue()));
          }
  
          return dest;
      }
docs: {@inheritDoc}