/** * group. */ public function group($keys, $initial, $reduce, array $options = array()) { $this->time->start(); $return = parent::group($keys, $initial, $reduce, $options); $time = $this->time->stop(); $this->log(array('type' => 'group', 'keys' => $keys, 'initial' => $initial, 'reduce' => $reduce, 'options' => $options, 'time' => $time)); return $return; }