44 files declare their use of FieldableEntityInterface

BaseFieldDefinition.php in core/lib/Drupal/Core/Field/BaseFieldDefinition.php
comment.module in core/modules/comment/comment.module
Enables users to comment on published content.
CommentLinkBuilder.php in core/modules/comment/src/CommentLinkBuilder.php
CommentLinkBuilderInterface.php in core/modules/comment/src/CommentLinkBuilderInterface.php
CommentManager.php in core/modules/comment/src/CommentManager.php
CommentManagerTest.php in core/modules/comment/tests/src/Unit/CommentManagerTest.php
CommentStatistics.php in core/modules/comment/src/CommentStatistics.php
CommentStatisticsInterface.php in core/modules/comment/src/CommentStatisticsInterface.php
CommentStorage.php in core/modules/comment/src/CommentStorage.php
CommentStorageInterface.php in core/modules/comment/src/CommentStorageInterface.php
CommentTypeForm.php in core/modules/comment/src/CommentTypeForm.php
CreateSampleEntityTest.php in core/tests/Drupal/KernelTests/Core/Entity/CreateSampleEntityTest.php
DateTimeFieldItemList.php in core/modules/datetime/src/Plugin/Field/FieldType/DateTimeFieldItemList.php
DefaultHtmlRouteProvider.php in core/lib/Drupal/Core/Entity/Routing/DefaultHtmlRouteProvider.php
DefaultHtmlRouteProviderTest.php in core/tests/Drupal/Tests/Core/Entity/Routing/DefaultHtmlRouteProviderTest.php
DefaultSelection.php in core/lib/Drupal/Core/Entity/Plugin/EntityReferenceSelection/DefaultSelection.php
editor.module in core/modules/editor/editor.module
Adds bindings for client-side "text editors" to text formats.
EntityAdapter.php in core/lib/Drupal/Core/Entity/Plugin/DataType/EntityAdapter.php
EntityConstraintViolationListTest.php in core/tests/Drupal/Tests/Core/Entity/EntityConstraintViolationListTest.php
EntityFieldManagerTest.php in core/tests/Drupal/Tests/Core/Entity/EntityFieldManagerTest.php
EntityFormDisplay.php in core/lib/Drupal/Core/Entity/Entity/EntityFormDisplay.php
EntityFormDisplayInterface.php in core/lib/Drupal/Core/Entity/Display/EntityFormDisplayInterface.php
EntityHasFieldConstraintValidator.php in core/lib/Drupal/Core/Entity/Plugin/Validation/Constraint/EntityHasFieldConstraintValidator.php
EntityReferenceFieldItemList.php in core/lib/Drupal/Core/Field/EntityReferenceFieldItemList.php
EntityReferenceItem.php in core/lib/Drupal/Core/Field/Plugin/Field/FieldType/EntityReferenceItem.php
EntityViewController.php in core/lib/Drupal/Core/Entity/Controller/EntityViewController.php
EntityViewDisplay.php in core/lib/Drupal/Core/Entity/Entity/EntityViewDisplay.php
EntityViewDisplayInterface.php in core/lib/Drupal/Core/Entity/Display/EntityViewDisplayInterface.php
FieldConfigBase.php in core/lib/Drupal/Core/Field/FieldConfigBase.php
FieldDefinition.php in core/lib/Drupal/Core/Field/FieldDefinition.php
FieldDefinitionInterface.php in core/lib/Drupal/Core/Field/FieldDefinitionInterface.php
FieldItemList.php in core/lib/Drupal/Core/Field/FieldItemList.php
FieldItemListInterface.php in core/lib/Drupal/Core/Field/FieldItemListInterface.php
FieldStorageDefinitionInterface.php in core/lib/Drupal/Core/Field/FieldStorageDefinitionInterface.php
FieldTranslationSqlStorageTest.php in core/tests/Drupal/KernelTests/Core/Entity/FieldTranslationSqlStorageTest.php
FieldTypePluginManager.php in core/lib/Drupal/Core/Field/FieldTypePluginManager.php
FieldTypePluginManagerInterface.php in core/lib/Drupal/Core/Field/FieldTypePluginManagerInterface.php
KeyValueEntityStorage.php in core/lib/Drupal/Core/Entity/KeyValueStore/KeyValueEntityStorage.php
ModuleInstaller.php in core/lib/Drupal/Core/Extension/ModuleInstaller.php
NavigationRenderer.php in core/modules/navigation/src/NavigationRenderer.php
OptionsWidgetBase.php in core/lib/Drupal/Core/Field/Plugin/Field/FieldWidget/OptionsWidgetBase.php
RawStringFormatterTest.php in core/modules/field/tests/src/Kernel/KernelString/RawStringFormatterTest.php
StringFormatterTest.php in core/modules/field/tests/src/Kernel/KernelString/StringFormatterTest.php
UserNameFormatterTest.php in core/modules/user/tests/src/Kernel/Field/UserNameFormatterTest.php

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