6 files declare their use of FileValidatorInterface
- CKEditor5ImageController.php in core/
modules/ ckeditor5/ src/ Controller/ CKEditor5ImageController.php  - FileUploadHandler.php in core/
modules/ file/ src/ Upload/ FileUploadHandler.php  - FileUploadResource.php in core/
modules/ file/ src/ Plugin/ rest/ resource/ FileUploadResource.php  - FileValidationConstraintValidator.php in core/
modules/ file/ src/ Plugin/ Validation/ Constraint/ FileValidationConstraintValidator.php  - FileValidatorTestBase.php in core/
modules/ file/ tests/ src/ Kernel/ Validation/ FileValidatorTestBase.php  - TemporaryJsonapiFileFieldUploader.php in core/
modules/ jsonapi/ src/ Controller/ TemporaryJsonapiFileFieldUploader.php  
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