src/Didww/API2/Order.php
protected function _ensureNumber()
    {
        if (!$this->_number instanceof DIDNumber) {
            $this->setNumber(new DIDNumber($this));
        }
        return $this->getNumber();
    }
protected function _ensureNumber()
    {
        if (!$this->_number instanceof DIDNumber) {
            $this->setNumber(new DIDNumber($this));
        }
        return $this->getNumber();
    }
/*
didnumber wrapping
get DIDNumber object associated with order
@return \Didww\API2\DIDNumber