app/code/Magento/Checkout/Model/Type/Onepage.php

...ode/Magento/Checkout/Test/Unit/Model/Type/OnepageTest.php

app/code/Magento/Paypal/Model/Express/Checkout.php

...Magento/Quote/Model/GuestCart/GuestCartItemRepository.php

...agento/Quote/Model/GuestCart/GuestCartTotalManagement.php

app/code/Magento/Quote/Model/QuoteManagement.php

...to/Quote/Test/Unit/Model/Cart/CartTotalManagementTest.php

...Test/Unit/Model/GuestCart/GuestCartItemRepositoryTest.php

...gento/Quote/Test/Unit/Model/Quote/Item/RepositoryTest.php

...ode/Magento/Quote/Test/Unit/Model/QuoteManagementTest.php

app/code/Magento/Sales/Model/AdminOrder/Create.php

.../Catalog/_files/quote_with_product_and_custom_options.php

...testsuite/Magento/Paypal/_files/quote_payment_express.php

...nto/Paypal/_files/quote_payment_express_with_customer.php

...testsuite/Magento/Paypal/_files/quote_payment_payflow.php

...stsuite/Magento/Quote/Model/Quote/Item/RepositoryTest.php

...ion/testsuite/Magento/Quote/Model/QuoteManagementTest.php

...integration/testsuite/Magento/Sales/_files/order_info.php