59 files declare their use of Extension

AdvisoryFeedTestHooks.php in core/modules/system/tests/modules/advisory_feed_test/src/Hook/AdvisoryFeedTestHooks.php
advisory_feed_test.module in core/modules/system/tests/modules/advisory_feed_test/advisory_feed_test.module
ComponentNegotiator.php in core/modules/sdc/src/ComponentNegotiator.php
ComponentNegotiator.php in core/lib/Drupal/Core/Theme/ComponentNegotiator.php
ConfigTranslationTestHooks.php in core/modules/config_translation/tests/modules/config_translation_test/src/Hook/ConfigTranslationTestHooks.php
config_translation_test.module in core/modules/config_translation/tests/modules/config_translation_test/config_translation_test.module
DependencyVersionTestHooks.php in core/modules/system/tests/modules/dependency_version_test/src/Hook/DependencyVersionTestHooks.php
dependency_version_test.module in core/modules/system/tests/modules/dependency_version_test/dependency_version_test.module
DeprecatedModuleTestHooks.php in core/modules/system/tests/modules/deprecated_module_test/src/Hook/DeprecatedModuleTestHooks.php
deprecated_module_test.module in core/modules/system/tests/modules/deprecated_module_test/deprecated_module_test.module
DrupalKernel.php in core/lib/Drupal/Core/DrupalKernel.php
EnabledExtensionsValidatorTest.php in core/modules/package_manager/tests/src/Kernel/EnabledExtensionsValidatorTest.php
ExtensionDiscoveryTest.php in core/tests/Drupal/Tests/Core/Extension/ExtensionDiscoveryTest.php
ExtensionListTest.php in core/tests/Drupal/Tests/Core/Extension/ExtensionListTest.php
ExtensionSerializationTest.php in core/tests/Drupal/Tests/Core/Extension/ExtensionSerializationTest.php
FieldDefinitionIntegrityTest.php in core/modules/field/tests/src/Kernel/FieldDefinitionIntegrityTest.php
GenerateTheme.php in core/lib/Drupal/Core/Command/GenerateTheme.php
InstallerNonDefaultDatabaseDriverTest.php in core/tests/Drupal/FunctionalTests/Installer/InstallerNonDefaultDatabaseDriverTest.php
InstallStorage.php in core/lib/Drupal/Core/Config/InstallStorage.php
LayoutPluginManagerTest.php in core/tests/Drupal/Tests/Core/Layout/LayoutPluginManagerTest.php
LegacyExtensionTest.php in core/tests/Drupal/Tests/Core/Extension/LegacyExtensionTest.php
LinkRelationTypeManager.php in core/lib/Drupal/Core/Http/LinkRelationTypeManager.php
LocaleTestDevelopmentReleaseHooks.php in core/modules/locale/tests/modules/locale_test_development_release/src/Hook/LocaleTestDevelopmentReleaseHooks.php
LocaleTestHooks.php in core/modules/locale/tests/modules/locale_test/src/Hook/LocaleTestHooks.php
LocaleTestTranslateHooks.php in core/modules/locale/tests/modules/locale_test_translate/src/Hook/LocaleTestTranslateHooks.php
locale_test.module in core/modules/locale/tests/modules/locale_test/locale_test.module
locale_test_development_release.module in core/modules/locale/tests/modules/locale_test_development_release/locale_test_development_release.module
locale_test_translate.module in core/modules/locale/tests/modules/locale_test_translate/locale_test_translate.module
ModuleHandlerTest.php in core/tests/Drupal/Tests/Core/Extension/ModuleHandlerTest.php
ModuleRequiredTestHooks.php in core/modules/system/tests/modules/module_required_test/src/Hook/ModuleRequiredTestHooks.php
ModulesListForm.php in core/modules/system/src/Form/ModulesListForm.php
module_required_test.module in core/modules/system/tests/modules/module_required_test/module_required_test.module
module_test.module in core/modules/system/tests/modules/module_test/module_test.module
PermissionHandlerTest.php in core/modules/user/tests/src/Unit/PermissionHandlerTest.php
ProjectInfo.php in core/lib/Drupal/Core/Utility/ProjectInfo.php
ResourceResponseValidatorTest.php in core/modules/jsonapi/tests/src/Unit/EventSubscriber/ResourceResponseValidatorTest.php
SecurityAdvisoriesFetcherTest.php in core/modules/system/tests/src/Kernel/SecurityAdvisories/SecurityAdvisoriesFetcherTest.php
StagedDatabaseUpdateValidator.php in core/modules/package_manager/tests/modules/package_manager_test_validation/src/StagedDatabaseUpdateValidator.php
StagedDBUpdateValidator.php in core/modules/package_manager/src/Validator/StagedDBUpdateValidator.php
system.module in core/modules/system/system.module
SystemHooks.php in core/modules/system/src/Hook/SystemHooks.php
SystemLocalTasksTest.php in core/modules/system/tests/src/Unit/Menu/SystemLocalTasksTest.php
SystemTestHooks.php in core/modules/system/tests/modules/system_test/src/Hook/SystemTestHooks.php
TestDiscoveryTest.php in core/tests/Drupal/Tests/Core/Test/TestDiscoveryTest.php
TestModuleRequiredByThemeHooks.php in core/modules/system/tests/themes/test_theme_depending_on_modules/test_module_required_by_theme/src/Hook/TestModuleRequiredByThemeHooks.php
TestRunnerKernel.php in core/lib/Drupal/Core/Test/TestRunnerKernel.php
test_module_required_by_theme.module in core/modules/system/tests/themes/test_theme_depending_on_modules/test_module_required_by_theme/test_module_required_by_theme.module
ThemeExtensionListTest.php in core/tests/Drupal/Tests/Core/Extension/ThemeExtensionListTest.php
ThemeHandlerTest.php in core/tests/Drupal/Tests/Core/Extension/ThemeHandlerTest.php
ThemeInitialization.php in core/lib/Drupal/Core/Theme/ThemeInitialization.php
ThemeInitializationInterface.php in core/lib/Drupal/Core/Theme/ThemeInitializationInterface.php
ThemePageTestHooks.php in core/modules/system/tests/modules/theme_page_test/src/Hook/ThemePageTestHooks.php
ThemeTestHooks.php in core/modules/system/tests/modules/theme_test/src/Hook/ThemeTestHooks.php
theme_page_test.module in core/modules/system/tests/modules/theme_page_test/theme_page_test.module
UpdateRegistry.php in core/lib/Drupal/Core/Update/UpdateRegistry.php
UpdateScriptTestHooks.php in core/modules/system/tests/modules/update_script_test/src/Hook/UpdateScriptTestHooks.php
UpdateTestHooks.php in core/modules/update/tests/modules/update_test/src/Hook/UpdateTestHooks.php
update_script_test.module in core/modules/system/tests/modules/update_script_test/update_script_test.module
update_test.module in core/modules/update/tests/modules/update_test/update_test.module

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