How is \Magento\Sales\Model\Order::loadByIncrementIdAndStoreId() implemented and used?

Context: How to get an order by its increment id programmatically?

Implementation

https://github.com/magento/magento2/blob/ffea3cd/app/code/Magento/Sales/Model/Order.php#L446-L462

The single usage

\Magento\Sales\Helper\Guest::loadValidOrder()

See also: