79 files declare their use of EntityFieldManagerInterface in Drupal 8

CommentController.php in core/modules/comment/src/Controller/CommentController.php

CommentForm.php in core/modules/comment/src/CommentForm.php

CommentManager.php in core/modules/comment/src/CommentManager.php

CommentManagerTest.php in core/modules/comment/tests/src/Unit/CommentManagerTest.php

CommentStorage.php in core/modules/comment/src/CommentStorage.php

ConfigEntityNormalizerTest.php in core/modules/serialization/tests/src/Unit/Normalizer/ConfigEntityNormalizerTest.php

ContentEntity.php in core/modules/migrate_drupal/src/Plugin/migrate/source/ContentEntity.php

ContentEntityBaseUnitTest.php in core/tests/Drupal/Tests/Core/Entity/ContentEntityBaseUnitTest.php

ContentEntityNormalizer.php in core/modules/hal/src/Normalizer/ContentEntityNormalizer.php

ContentEntityNormalizerTest.php in core/modules/serialization/tests/src/Unit/Normalizer/ContentEntityNormalizerTest.php

ContentTranslationController.php in core/modules/content_translation/src/Controller/ContentTranslationController.php

ContentTranslationUpdatesManager.php in core/modules/content_translation/src/ContentTranslationUpdatesManager.php

DefaultHtmlRouteProvider.php in core/lib/Drupal/Core/Entity/Routing/DefaultHtmlRouteProvider.php

DefaultHtmlRouteProviderTest.php in core/tests/Drupal/Tests/Core/Entity/Routing/DefaultHtmlRouteProviderTest.php

Contains \Drupal\Tests\Core\Entity\Routing\DefaultHtmlRouteProviderTest.

DefaultSelection.php in core/lib/Drupal/Core/Entity/Plugin/EntityReferenceSelection/DefaultSelection.php

EntityAdapterUnitTest.php in core/tests/Drupal/Tests/Core/Entity/TypedData/EntityAdapterUnitTest.php

EntityComment.php in core/modules/comment/src/Plugin/migrate/destination/EntityComment.php

EntityContentBase.php in core/modules/migrate/src/Plugin/migrate/destination/EntityContentBase.php

EntityDefinitionUpdateManagerTest.php in core/tests/Drupal/Tests/Core/Entity/EntityDefinitionUpdateManagerTest.php

EntityDenormalizerBase.php in core/modules/jsonapi/src/Normalizer/EntityDenormalizerBase.php

EntityDisplayFormBase.php in core/modules/field_ui/src/Form/EntityDisplayFormBase.php

EntityField.php in core/modules/views/src/Plugin/views/field/EntityField.php

EntityFormDisplayAccessControlHandlerTest.php in core/tests/Drupal/Tests/Core/Entity/Access/EntityFormDisplayAccessControlHandlerTest.php

EntityModerationRouteProvider.php in core/modules/content_moderation/src/Entity/Routing/EntityModerationRouteProvider.php

EntityNormalizer.php in core/modules/serialization/src/Normalizer/EntityNormalizer.php

EntityNormalizerTest.php in core/modules/serialization/tests/src/Unit/Normalizer/EntityNormalizerTest.php

EntityReferenceTranslationDeriver.php in core/modules/migrate_drupal/src/Plugin/migrate/EntityReferenceTranslationDeriver.php

EntityResource.php in core/modules/jsonapi/src/Controller/EntityResource.php

EntityRevision.php in core/modules/migrate/src/Plugin/migrate/destination/EntityRevision.php

EntityTestBase.php in core/modules/migrate/tests/src/Unit/Plugin/migrate/destination/EntityTestBase.php

Contains \Drupal\Tests\migrate\Unit\Plugin\migrate\destination\EntityTestBase

EntityTestDefinitionSubscriber.php in core/modules/system/tests/modules/entity_test/src/EntityTestDefinitionSubscriber.php

EntityUser.php in core/modules/user/src/Plugin/migrate/destination/EntityUser.php

EntityViewsData.php in core/modules/views/src/EntityViewsData.php

EntityViewsDataTest.php in core/modules/views/tests/src/Unit/EntityViewsDataTest.php

Contains \Drupal\Tests\views\Unit\EntityViewsDataTest.

ExtraFieldBlock.php in core/modules/layout_builder/src/Plugin/Block/ExtraFieldBlock.php

ExtraFieldBlockDeriver.php in core/modules/layout_builder/src/Plugin/Derivative/ExtraFieldBlockDeriver.php

Field.php in core/modules/views/src/Plugin/views/field/Field.php

FieldBlock.php in core/modules/layout_builder/src/Plugin/Block/FieldBlock.php

FieldBlockDeriver.php in core/modules/layout_builder/src/Plugin/Derivative/FieldBlockDeriver.php

FieldBlockTest.php in core/modules/layout_builder/tests/src/Kernel/FieldBlockTest.php

FieldConfigEntityUnitTest.php in core/modules/field/tests/src/Unit/FieldConfigEntityUnitTest.php

Contains \Drupal\Tests\field\Unit\FieldConfigEntityUnitTest.

FieldConfigListBuilder.php in core/modules/field_ui/src/FieldConfigListBuilder.php

FieldDefinitionListener.php in core/lib/Drupal/Core/Field/FieldDefinitionListener.php

FieldDefinitionListenerTest.php in core/tests/Drupal/Tests/Core/Field/FieldDefinitionListenerTest.php

FieldDefinitionTest.php in core/tests/Drupal/Tests/Core/Entity/FieldDefinitionTest.php

FieldLayoutBuilder.php in core/modules/field_layout/src/FieldLayoutBuilder.php

FieldLayoutBuilderTest.php in core/modules/field_layout/tests/src/Unit/FieldLayoutBuilderTest.php

FieldLayoutEntityFormDisplayEditForm.php in core/modules/field_layout/src/Form/FieldLayoutEntityFormDisplayEditForm.php

FieldLayoutEntityViewDisplayEditForm.php in core/modules/field_layout/src/Form/FieldLayoutEntityViewDisplayEditForm.php

FieldResolver.php in core/modules/jsonapi/src/Context/FieldResolver.php

FieldStorageAddForm.php in core/modules/field_ui/src/Form/FieldStorageAddForm.php

FieldStorageDefinitionListener.php in core/lib/Drupal/Core/Field/FieldStorageDefinitionListener.php

FieldTest.php in core/modules/views/tests/src/Unit/Plugin/field/FieldTest.php

Contains \Drupal\Tests\views\Unit\Plugin\field\FieldTest.

FileEntityNormalizer.php in core/modules/hal/src/Normalizer/FileEntityNormalizer.php

FileUpload.php in core/modules/jsonapi/src/Controller/FileUpload.php

FileUploadResource.php in core/modules/file/src/Plugin/rest/resource/FileUploadResource.php

ForumManager.php in core/modules/forum/src/ForumManager.php

ForumManagerTest.php in core/modules/forum/tests/src/Unit/ForumManagerTest.php

Image.php in core/modules/media/src/Plugin/media/Source/Image.php

KeyValueEntityStorageTest.php in core/tests/Drupal/Tests/Core/Entity/KeyValueStore/KeyValueEntityStorageTest.php

MediaRouteProvider.php in core/modules/media/src/Routing/MediaRouteProvider.php

MediaSourceBase.php in core/modules/media/src/MediaSourceBase.php

MediaTypeForm.php in core/modules/media/src/MediaTypeForm.php

Node.php in core/modules/node/src/Plugin/views/wizard/Node.php

NodeNewComments.php in core/modules/comment/src/Plugin/views/field/NodeNewComments.php

NodeTypeForm.php in core/modules/node/src/NodeTypeForm.php

OEmbed.php in core/modules/media/src/Plugin/media/Source/OEmbed.php

OverridesSectionStorage.php in core/modules/layout_builder/src/Plugin/SectionStorage/OverridesSectionStorage.php

OverridesSectionStorageTest.php in core/modules/layout_builder/tests/src/Unit/OverridesSectionStorageTest.php

RelationLinkManager.php in core/modules/hal/src/LinkManager/RelationLinkManager.php

ResourceIdentifierNormalizer.php in core/modules/jsonapi/src/Normalizer/ResourceIdentifierNormalizer.php

ResourceIdentifierNormalizerTest.php in core/modules/jsonapi/tests/src/Unit/Normalizer/ResourceIdentifierNormalizerTest.php

ResourceTypeRepository.php in core/modules/jsonapi/src/ResourceType/ResourceTypeRepository.php

SqlContentEntityStorage.php in core/lib/Drupal/Core/Entity/Sql/SqlContentEntityStorage.php

SqlContentEntityStorageSchema.php in core/lib/Drupal/Core/Entity/Sql/SqlContentEntityStorageSchema.php

TemporaryQueryGuard.php in core/modules/jsonapi/src/Access/TemporaryQueryGuard.php

UserSelection.php in core/modules/user/src/Plugin/EntityReferenceSelection/UserSelection.php

ViewsConfigUpdater.php in core/modules/views/src/ViewsConfigUpdater.php

ViewsQueryAlter.php in core/modules/workspaces/src/ViewsQueryAlter.php