LMongo\Eloquent\Builder::increment PHP 메소드

    public function increment($column, $amount = 1, array $extra = array())
    {
        $extra = $this->addUpdatedAtColumn($extra);
        return $this->query->increment($column, $amount, $extra);
    }

 /**
  * Increment a column's value by a given amount.
  *
  * @param  string  $column
  * @param  int     $amount
  * @param  array   $extra
  * @return int
  */
 public function increment($column, $amount = 1, array $extra = array())
 {
     $extra = $this->addUpdatedAtColumn($extra);
     return $this->query->increment($column, $amount, $extra);
 }