public function mapReduce($map, $reduce, $out = ['inline' => true], array $query = [], array $options = [])
{
$this->log(['mapReduce' => true, 'map' => $map, 'reduce' => $reduce, 'out' => $out, 'query' => $query, 'options' => $options]);
return parent::mapReduce($map, $reduce, $out, $query, $options);
}