/**
  * {@inheritDoc}
  * 
  * Format:
  * 
  * <AttributeTemplate_Add code="spikes-armor" prompt="Armor Spikes" />
  */
 public function toXml($version = Version::CURRENT, array $options = array())
 {
     $xmlObject = new SimpleXMLElement('<AttributeTemplate_Add />');
     $xmlObject->addAttribute('code', $this->getCode());
     $xmlObject->addAttribute('prompt', $this->getPrompt());
     return $xmlObject;
 }

 /**
  * {@inheritDoc}
  * 
  * Format:
  *
  * <ImageType_Add>
  *     <Code>type_1</Code>
  *     <Description>this is the description for type_1</Description>
  * </ImageType_Add>
  *   
  */
 public function toXml($version = Version::CURRENT, array $options = array())
 {
     $xmlObject = new SimpleXMLElement('<ImageType_Add></ImageType_Add>');
     $xmlObject->addChild('Code', $this->getCode());
     $xmlObject->addChild('Description', $this->getDescription());
     return $xmlObject;
 }

 /**
  * {@inheritDoc}
  *
  * Format:
  *
  * <Order_Delete_Item order_id="1000" line_id="1000" />
  */
 public function toXml($version = Version::CURRENT, array $options = array())
 {
     $xmlObject = new SimpleXMLElement('<Order_Delete_Item />');
     $xmlObject->addAttribute('order_id', $this->getOrderId());
     $xmlObject->addAttribute('line_id', $this->getLineId());
     return $xmlObject;
 }

 /**
  * {@inheritDoc}
  *
  * Format:
  *
  * <ProductAttribute_Delete product_code="chest" attribute_code="bar" />
  *
  */
 public function toXml($version = Version::CURRENT, array $options = array())
 {
     $xmlObject = new SimpleXMLElement('<ProductAttribute_Delete />');
     $xmlObject->addAttribute('product_code', $this->getProductCode());
     $xmlObject->addAttribute('attribute_code', $this->getAttributeCode());
     return $xmlObject;
 }

 /**
  * {@inheritDoc}
  *
  * Format:
  *
  *  <Attribute_Boolean attribute_code="text" present="true"/>
  */
 public function toXml($version = Version::CURRENT, array $options = array())
 {
     $xmlObject = new SimpleXMLElement('<Attribute_Boolean />');
     $xmlObject->addAttribute('attribute_code', $this->getAttributeCode());
     $xmlObject->addAttribute('present', $this->getPresent() ? 'true' : 'false');
     return $xmlObject;
 }

 /**
  * {@inheritDoc}
  *
  * Format:
  *
  * <ShippingMethod module_code="upsxml" method_code="02" />
  *
  */
 public function toXml($version = Version::CURRENT, array $options = array())
 {
     $xmlObject = new SimpleXMLElement('<ShippingMethod />');
     $xmlObject->addAttribute('module_code', $this->getModuleCode());
     $xmlObject->addAttribute('method_code', $this->getMethodCode());
     return $xmlObject;
 }

 /**
  * {@inheritDoc}
  *
  * Format:
  *
  * <CouponCustomer_Assign coupon_code="xxx" customer_login="yyy" />
  */
 public function toXml($version = Version::CURRENT, array $options = array())
 {
     $xmlObject = new SimpleXMLElement('<CouponCustomer_Assign />');
     $xmlObject->addAttribute('coupon_code', $this->getCouponCode());
     $xmlObject->addAttribute('customer_login', $this->getCustomerLogin());
     return $xmlObject;
 }

 /**
  * {@inheritDoc}
  * 
  * Format:
  * 
  *  <CategoryProduct_Assign category_code="Food" product_code="ale-gallon" />
  */
 public function toXml($version = Version::CURRENT, array $options = array())
 {
     $xmlObject = new SimpleXMLElement('<CategoryProduct_Assign />');
     $xmlObject->addAttribute('category_code', $this->getCategoryCode());
     $xmlObject->addAttribute('product_code', $this->getProductCode());
     return $xmlObject;
 }

 /**
  * {@inheritDoc}
  * 
  * Format:
  * 
  *  <Attribute_Option attribute_code="select" option_code="s1" />
  */
 public function toXml($version = Version::CURRENT, array $options = array())
 {
     $xmlObject = new SimpleXMLElement('<Attribute_Option />');
     $xmlObject->addAttribute('attribute_code', $this->getAttributeCode());
     $xmlObject->addAttribute('option_code', $this->getOptionCode());
     return $xmlObject;
 }

 /**
  * {@inheritDoc}
  * 
  * Format:
  * 
  * <Item code="product_display">
  *      <ImageDimensions constrain="no"/>
  * </Item>
  */
 public function toXml($version = Version::CURRENT, array $options = array())
 {
     $xmlObject = new SimpleXMLElement('<Item />');
     $xmlObject->addAttribute('code', $this->getCode());
     XmlHelper::appendArrayToParent($xmlObject, $this->getData());
     return $xmlObject;
 }

 /**
  * {@inheritDoc}
  * 
  * Format:
  * 
  *  <ProductKit_Generate_Variants product_code="test" pricing_method="master"/>
  */
 public function toXml($version = Version::CURRENT, array $options = array())
 {
     $xmlObject = new SimpleXMLElement('<ProductKit_Generate_Variants />');
     $xmlObject->addAttribute('product_code', $this->getProductCode());
     $xmlObject->addAttribute('pricing_method', $this->getPricingMethod());
     return $xmlObject;
 }

 /**
  * {@inheritDoc}
  * 
  * Format:
  * 
  *   <MivaMailerSettings_Update>
  *       <Account/>
  *       <Server/>
  *   </MivaMailerSettings_Update>
  *
  */
 public function toXml($version = Version::CURRENT, array $options = array())
 {
     $xmlObject = new SimpleXMLElement('<MivaMailerSettings_Update></MivaMailerSettings_Update>');
     $xmlObject->addChild('Account', $this->getAccount());
     $xmlObject->addChild('Server', $this->getServer());
     return $xmlObject;
 }

 /**
  * {@inheritDoc}
  * 
  * Format:
  * 
  * <UpsellSettings_Update>
  *     <ProductsToShow>3</ProductsToShow>
  *     <MaxProductsToSelect>3</MaxProductsToSelect>
  * </UpsellSettings_Update>
  *
  */
 public function toXml($version = Version::CURRENT, array $options = array())
 {
     $xmlObject = new SimpleXMLElement('<UpsellSettings_Update />');
     $xmlObject->addChild('ProductsToShow', $this->getProductsToShow());
     $xmlObject->addChild('MaxProductsToSelect', $this->getMaxProductsToSelect());
     return $xmlObject;
 }

 /**
  * {@inheritDoc}
  * 
  * Format:
  * 
  * <AvailabilityGroupProduct_Assign group_name="Thief" product_code="kit-disguise" />
  */
 public function toXml($version = Version::CURRENT, array $options = array())
 {
     $xmlObject = new SimpleXMLElement('<AvailabilityGroupCustomer_Assign />');
     $xmlObject->addAttribute('group_name', $this->getGroupName());
     $xmlObject->addAttribute('product_code', $this->getProductCode());
     return $xmlObject;
 }

 /**
  * {@inheritDoc}
  *
  * Format:
  *
  *  <ProductRelatedProduct_Unassign product_code="bolts" relatedproduct_code="bolts-silver" />
  */
 public function toXml($version = Version::CURRENT, array $options = array())
 {
     $xmlObject = new SimpleXMLElement('<ProductRelatedProduct_Unassign />');
     $xmlObject->addAttribute('product_code', $this->getProductCode());
     $xmlObject->addAttribute('relatedproduct_code', $this->getRelatedProductCode());
     return $xmlObject;
 }

 /**
  * {@inheritDoc}
  * 
  * Format:
  * 
  *  <ProductImage_Delete product_code="test" filepath="graphics/00000001/s2k_silver_front.jpg" />
  */
 public function toXml($version = Version::CURRENT, array $options = array())
 {
     $xmlObject = new SimpleXMLElement('<ProductImage_Add></ProductImage_Add>');
     $xmlObject->addAttribute('product_code', $this->getProductCode());
     $xmlObject->addAttribute('filepath', $this->getFilePath());
     return $xmlObject;
 }

 /**
  * {@inheritDoc}
  *
  * Format:
  *
  * <CouponPriceGroup_Assign coupon_code="xxx" group_name="yyy" />
  */
 public function toXml($version = Version::CURRENT, array $options = array())
 {
     $xmlObject = new SimpleXMLElement('<CouponPriceGroup_Assign />');
     $xmlObject->addAttribute('coupon_code', $this->getCouponCode());
     $xmlObject->addAttribute('group_name', $this->getGroupName());
     return $xmlObject;
 }

 /**
  * {@inheritDoc}
  *
  * Format:
  *
  * <Coupon_Delete code="xxx" />
  */
 public function toXml($version = Version::CURRENT, array $options = array())
 {
     if ($version < Version::NINE) {
         return;
     }
     $xmlObject = new SimpleXMLElement('<Coupon_Delete />');
     $xmlObject->addAttribute('code', $this->getCode());
     return $xmlObject;
 }

 /**
  * {@inheritDoc}
  * 
  * Format:
  * 
  * <Module code="customfields" feature="fields_prod">
  *      <ProductField_Delete code="code" />
  *  </Module>
  */
 public function toXml($version = Version::CURRENT, array $options = array())
 {
     $xmlObject = new SimpleXMLElement('<Module />');
     $xmlObject->addAttribute('code', 'customfields');
     $xmlObject->addAttribute('feature', 'fields_prod');
     $mainTag = $xmlObject->addChild('ProductField_Delete');
     $mainTag->addAttribute('Code', $this->getCode());
     return $xmlObject;
 }

 /**
  * {@inheritDoc}
  *
  * Format:
  *
  *  <Module code="discount_volume" feature="discount">
  *      <!-- Non-existent product -->
  *      <ProductPricingTable group_name="Volume Pricing Product Provisioning Test 01" product_code="non-existent" />
  *  </Module>
  */
 public function toXml($version = Version::CURRENT, array $options = array())
 {
     $xmlObject = new SimpleXMLElement('<Module />');
     $xmlObject->addAttribute('code', 'discount_volume');
     $xmlObject->addAttribute('feature', 'discount');
     foreach ($this->getProductPricingTables() as $productPricingTable) {
         XmlHelper::appendToParent($xmlObject, $productPricingTable->toXml($version, $options));
     }
     return $xmlObject;
 }