9 files declare their use of FileUploadSanitizeNameEvent

FileEventSubscriber.php in core/modules/file/src/EventSubscriber/FileEventSubscriber.php
FileSanitizationEventSubscriber.php in core/modules/file/tests/modules/file_validator_test/src/EventSubscriber/FileSanitizationEventSubscriber.php
FileUploadHandler.php in core/modules/file/src/Upload/FileUploadHandler.php
FileUploadResource.php in core/modules/file/src/Plugin/rest/resource/FileUploadResource.php
FileUploadSanitizeNameEventTest.php in core/tests/Drupal/Tests/Core/File/FileUploadSanitizeNameEventTest.php
SanitizeNameTest.php in core/modules/file/tests/src/Unit/SanitizeNameTest.php
SecurityFileUploadEventSubscriber.php in core/modules/system/src/EventSubscriber/SecurityFileUploadEventSubscriber.php
SecurityFileUploadEventSubscriberTest.php in core/modules/system/tests/src/Unit/Event/SecurityFileUploadEventSubscriberTest.php
TemporaryJsonapiFileFieldUploader.php in core/modules/jsonapi/src/Controller/TemporaryJsonapiFileFieldUploader.php

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