Context: How does \Magento\Framework\EntityManager\Operation\Read\ReadExtensions::execute() work?

Details: How does \Magento\Catalog\Model\Product::getExtensionAttributes() work?
![]()
How does \Magento\ConfigurableProduct\Model\Product\ReadHandler::getLinkedProducts() work?
configurable_product_links: int
How does \Magento\ConfigurableProduct\Helper\Product\Options\Loader::load() work?
configurable_product_options: \Magento\ConfigurableProduct\Api\Data\OptionInterface
Details: Extension attributes for \Magento\Catalog\Api\Data\ProductInterface