15#ifdef SPARROW_TRACK_COPIES
SPARROW_API void reset(const std::string &key)
SPARROW_API void increase(const std::string &key)
SPARROW_API int count(const std::string &key, int disabled_value=0)
SPARROW_API std::vector< std::string > key_list()
SPARROW_API void reset_all()
constexpr bool is_enabled()