| 6606 | struct ChronometerModel final : public ChronometerConcept { |
| 6607 | void start() override { started = Clock::now(); } |
| 6608 | void finish() override { finished = Clock::now(); } |
| 6609 | |
| 6610 | ClockDuration<Clock> elapsed() const { return finished - started; } |
| 6611 |