protected function getNumbers() {
        if (!$this->_numbers) {
            $this->_numbers = new NumberList($this->version);
        }

        return $this->_numbers;
    }
protected function getNumbers() {
        if (!$this->_numbers) {
            $this->_numbers = new NumberList($this->version);
        }

        return $this->_numbers;
    }
protected function getNumbers ( ) { if ( ! $ this -> _numbers ) { $ this -> _numbers = new NumberList ( $ this -> version ) ; } return $ this -> _numbers ; }
Access the numbers
Access the numbers