template <>
  struct to_object<sf::Event::EventType, std::true_type>
  {
    static core::T_sp convert(sf::Event::EventType v)
    {
      core::Symbol_sp converterSym = core::lisp_intern("SFML","*ENUM-TO-SYMBOL-MAPPER*");
      core::SymbolToEnumConverter_sp converter = converterSym->symbolValue().as<core::SymbolToEnumConverter_O>();
      return converter->symbolForEnum<sf::Event::EventType>(v);
    }
  };