+ template<typename L, typename... Args>
+ void add(const std::string &k, void (L::*func)(Args...))
+ { add(k, new LoaderFuncN<L, Args...>(func)); }
+
+ /** Adds a keyword that is loaded by calling a function with a bound
+ first argument. */
+ template<typename L, typename B0, typename... Args>
+ void add(const std::string &k, void (L::*func)(B0, Args...), const typename std::remove_reference<B0>::type &b0)
+ { add(k, new LoaderFuncNBound1<L, B0, Args...>(func, b0)); }
+
+ template<typename L, typename B0, typename... Args>
+ void add(const std::string &k, void (L::*func)(B0, Args...), B0 &&b0)
+ { add(k, new LoaderFuncNBound1<L, B0, Args...>(func, std::forward<B0>(b0))); }
+
+ /** Adds a keyword that is loaded into a member of the loaded object. */
+ template<typename L, typename T0>
+ void add(const std::string &k, T0 L::*p0)
+ { add(k, new LoadValue1<L, T0>(p0)); }
+
+ template<typename L, typename T0, typename T1>
+ void add(const std::string &k, T0 L::*p0, T1 L::*p1)
+ { add(k, new LoadValue2<L, T0, T1>(p0, p1)); }
+
+ /** Adds a keyword that is recognized but ignored. */
+ void add(const std::string &k)
+ { add(k, nullptr); }