def _copy_two_level(self, metrics, prefix, data, filter=lambda key: True):
        for key1, d1 in data.iteritems():
            self._copy_one_level(metrics, '%s.%s' % (prefix, key1), d1, filter)
dataset/ETHPy150Open BrightcoveOS/Diamond/src/collectors/elasticsearch/elasticsearch.py/ElasticSearchCollector._copy_two_level/original