22 files declare their use of ConfigEvents
- AdvisoriesConfigSubscriber.php in core/modules/ system/ src/ EventSubscriber/ AdvisoriesConfigSubscriber.php 
- CKEditor5CacheTag.php in core/modules/ ckeditor5/ src/ EventSubscriber/ CKEditor5CacheTag.php 
- ColorConfigCacheInvalidator.php in core/modules/ color/ src/ EventSubscriber/ ColorConfigCacheInvalidator.php 
- ConfigCacheTag.php in core/modules/ system/ src/ EventSubscriber/ ConfigCacheTag.php 
- ConfigEventsTest.php in core/tests/ Drupal/ KernelTests/ Core/ Config/ ConfigEventsTest.php 
- ConfigSchemaChecker.php in core/lib/ Drupal/ Core/ Config/ Development/ ConfigSchemaChecker.php 
- ConfigSnapshotSubscriber.php in core/lib/ Drupal/ Core/ EventSubscriber/ ConfigSnapshotSubscriber.php 
- ConfigSubscriber.php in core/modules/ language/ src/ EventSubscriber/ ConfigSubscriber.php 
- ConfigSubscriber.php in core/modules/ config/ src/ ConfigSubscriber.php 
- EventSubscriber.php in core/modules/ config/ tests/ config_collection_install_test/ src/ EventSubscriber.php 
- EventSubscriber.php in core/modules/ config/ tests/ config_events_test/ src/ EventSubscriber.php 
- EventSubscriber.php in core/modules/ config/ tests/ config_transformer_test/ src/ EventSubscriber.php 
- EventSubscriber.php in core/modules/ config/ tests/ config_import_test/ src/ EventSubscriber.php 
- Fast404ExceptionHtmlSubscriber.php in core/lib/ Drupal/ Core/ EventSubscriber/ Fast404ExceptionHtmlSubscriber.php 
- FinalMissingContentSubscriber.php in core/lib/ Drupal/ Core/ Config/ Importer/ FinalMissingContentSubscriber.php 
- LocaleConfigSubscriber.php in core/modules/ locale/ src/ LocaleConfigSubscriber.php 
- MediaConfigSubscriber.php in core/modules/ media/ src/ EventSubscriber/ MediaConfigSubscriber.php 
- NodeAdminRouteSubscriber.php in core/modules/ node/ src/ EventSubscriber/ NodeAdminRouteSubscriber.php 
- QueryFactory.php in core/lib/ Drupal/ Core/ Config/ Entity/ Query/ QueryFactory.php 
- SystemConfigSubscriber.php in core/modules/ system/ src/ SystemConfigSubscriber.php 
- TimeZoneResolver.php in core/modules/ system/ src/ TimeZoneResolver.php 
- UpdateRegistry.php in core/lib/ Drupal/ Core/ Update/ UpdateRegistry.php 
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