Method pointer

include/sol/stack_reference.hpp:88–91

		}

		const void* pointer(lua_State* L_) const noexcept {
			const void* pointer_id = lua_topointer(L_, stack_index());
			return pointer_id;
		}

		type get_type(lua_State* L_) const noexcept {
			int untyped_value = lua_type(L_, stack_index());