218     std::string duration = toDurationString(std::chrono::milliseconds(timeMs));  in toDurationStringFromUint()  local
219     if (duration.empty())  in toDurationStringFromUint()
224     return std::make_optional(duration);  in toDurationStringFromUint()
259 std::string toISO8061ExtendedStr(std::chrono::duration<IntType, Period> t)  in toISO8061ExtendedStr()
261     using seconds = std::chrono::duration<int>;  in toISO8061ExtendedStr()
262     using minutes = std::chrono::duration<int, std::ratio<60>>;  in toISO8061ExtendedStr()
263     using hours = std::chrono::duration<int, std::ratio<3600>>;  in toISO8061ExtendedStr()
264     using days = std::chrono::duration<  in toISO8061ExtendedStr()
285         t = days(1) - std::chrono::duration<IntType, Period>(1);  in toISO8061ExtendedStr()
292         t = std::chrono::duration<IntType, Period>::zero();  in toISO8061ExtendedStr()
308         using MilliDuration = std::chrono::duration<int, std::milli>;  in toISO8061ExtendedStr()
314         using MicroDuration = std::chrono::duration<int, std::micro>;  in toISO8061ExtendedStr()
328 std::string toISO8061ExtendedStr(std::chrono::duration<IntType, Period> dur)
332     using SubType = std::chrono::duration<IntType, Period>;
347         dur = std::chrono::duration<IntType, Period>::zero();
386     using DurationType = std::chrono::duration<uint64_t>;  in getDateTimeUint()
397     using DurationType = std::chrono::duration<uint64_t, std::milli>;  in getDateTimeUintMs()
405     using DurationType = std::chrono::duration<uint64_t, std::micro>;  in getDateTimeUintUs()
412     using DurationType = std::chrono::duration<std::time_t>;  in getDateTimeStdtime()
445 using usSinceEpoch = std::chrono::duration<int64_t, std::micro>;