lib/Model/OrderItem.php
public function setProductCode($product_code)
    {
        if (!is_null($product_code) && (strlen($product_code) > 200)) {
            throw new \InvalidArgumentException('invalid length for $product_code when calling OrderItem., must be smaller than or equal to 200.');
        }

        $this->container['product_code'] = $product_code;

        return $this;
    }
public function setProductCode($product_code)
    {
        if (!is_null($product_code) && (strlen($product_code) > 200)) {
            throw new \InvalidArgumentException('invalid length for $product_code when calling OrderItem., must be smaller than or equal to 200.');
        }

        $this->container['product_code'] = $product_code;

        return $this;
    }
Sets product_code
@param string $product_code
@return $this