def meter(self, key):
        if key not in self._meters:
            self._meters[key] = Meter(clock=self._clock)
        return self._meters[key]
Update document (partial update from delta document)
dataset/ETHPy150Open cloudera/hue/desktop/core/ext-py/pyformance-0.3.2/pyformance/registry.py/MetricsRegistry.meter--crossover with--dataset/ETHPy150Open Net-ng/kansha/kansha/services/search/elasticengine.py/ElasticSearchEngine.update_document