_get(self::GROUP_ID); } /** * {@inheritdoc} */ public function setGroupId($id) { return $this->setData(self::GROUP_ID, $id); } /** * {@inheritdoc} */ public function getAmount() { return $this->_get(self::AMOUNT); } /** * {@inheritdoc} */ public function setAmount($amount) { return $this->setData(self::AMOUNT, $amount); } /** * {@inheritdoc} */ public function getRates() { return $this->_get(self::RATES); } /** * {@inheritdoc} */ public function setRates($rates) { return $this->setData(self::RATES, $rates); } }