+ bool get_bool(const xmlNode *ptr, bool default_value);
+ int get_int(const xmlNode *ptr, int default_value);
+ bool check_attribute(const _xmlAttr *ptr,
+ const std::string &ns,
+ const std::string &name);
+ bool is_attribute(const _xmlAttr *ptr,
+ const std::string &ns,
+ const std::string &name);