message: To make it safer
diff: @@ -389,8 +389,11 @@ template<>
  struct ApiClient::TypeInterpretation<oatpp::Boolean> {
  static oatpp::String toString(const oatpp::String &typeName, const oatpp::Boolean &parameter) {
  (void) typeName;
  + if(parameter.get() != nullptr) {
  return utils::conversion::boolToStr(*parameter);
  }
  + return oatpp::String("false", 5, false);
  + }
  };
  template<class T, class I>
  