6 files declare their use of TransactionSettings in Drupal driver for SQL Server and SQL Azure 8.2

Connection.php in drivers/lib/Drupal/Driver/Database/sqlsrv/Connection.php

Definition of Drupal\Driver\Database\sqlsrv\Connection

Insert.php in drivers/lib/Drupal/Driver/Database/sqlsrv/Insert.php

Definition of Drupal\Driver\Database\sqlsrv\Insert

Schema.php in drivers/lib/Drupal/Driver/Database/sqlsrv/Schema.php

Definition of Drupal\Driver\Database\sqlsrv\Schema

Transaction.php in drivers/lib/Drupal/Driver/Database/sqlsrv/Transaction.php

Definition of Drupal\Driver\Database\sqlsrv\Transaction

Update.php in drivers/lib/Drupal/Driver/Database/sqlsrv/Update.php

Definition of Drupal\Driver\Database\sqlsrv\Update

Upsert.php in drivers/lib/Drupal/Driver/Database/sqlsrv/Upsert.php

Contains \Drupal\Core\Database\Driver\sqlsrv\Upsert