6 files declare their use of StatementWrapper in Drupal 9

Connection.php in core/lib/Drupal/Core/Database/Driver/pgsql/Connection.php

Connection.php in core/lib/Drupal/Core/Database/Driver/mysql/Connection.php

ConnectionTest.php in core/tests/Drupal/Tests/Core/Database/ConnectionTest.php

ConnectionTest.php in core/tests/Drupal/KernelTests/Core/Database/ConnectionTest.php

StatementWrapperLegacyTest.php in core/tests/Drupal/KernelTests/Core/Database/StatementWrapperLegacyTest.php

StubConnection.php in core/tests/Drupal/Tests/Core/Database/Stub/StubConnection.php