code: public Map/*< String, List< String > >*/ getParameters()
      {
          if(_parameters == null || !_parameters.hasParameters())
              return Collections.EMPTY_MAP;
          else return _parameters.getParameters();
      }
docs: Returns an unmodifiable {@link Map} of all parameters.
  
  @return an unmodifiable {@link java.util.Map} of names and values for all parameters