def timer(self, key):
        if key not in self._timers:
            self._timers[key] = Timer(clock=self._clock)
        return self._timers[key]
Gets a timer based on a key, creates a new one if it does not exist.
dataset/ETHPy150Open cloudera/hue/desktop/core/ext-py/pyformance-0.3.2/pyformance/registry.py/MetricsRegistry.timer