How does \Magento\Catalog\Model\Product::getExtensionAttributes() work?

dmitry_fedyuk · April 30, 2016, 1:27pm

Context: How does \Magento\ConfigurableProduct\Model\Product\ReadHandler::execute() work?

magento/magento2/blob/958164/app/code/Magento/Catalog/Model/Product.php#L2475-L2487


/**
 * {@inheritdoc}
 *
 * @return \Magento\Catalog\Api\Data\ProductExtensionInterface|null
 */
public function getExtensionAttributes()
{
    $extensionAttributes = $this->_getExtensionAttributes();
    if (!$extensionAttributes) {
        return $this->extensionAttributesFactory->create('Magento\Catalog\Api\Data\ProductInterface');
    }
    return $extensionAttributes;
}

Details: How does \Magento\Framework\Api\ExtensionAttributesFactory::create() work?