/**
* Get balance instance
*
* @return Enterprise_CustomerBalance_Model_Balance
*/
protected function _getBalanceModel()
{
if (is_null($this->_balanceModel)) {
$this->_balanceModel = Mage::getModel('enterprise_customerbalance/balance')->setCustomer($this->_getCustomer())->setWebsiteId(Mage::app()->getStore()->getWebsiteId());
//load customer balance for customer in case we have
//registered customer and this is not guest checkout
if ($this->_getCustomer()->getId()) {
$this->_balanceModel->loadByCustomer();
}
}
return $this->_balanceModel;
}