108 files declare their use of BaseFieldDefinition in Drupal 8
- BaseFieldDefinitionTest.php in core/
tests/ Drupal/ Tests/ Core/ Entity/ BaseFieldDefinitionTest.php  - BaseFieldDefinitionTestBase.php in core/
tests/ Drupal/ Tests/ Core/ Field/ BaseFieldDefinitionTestBase.php  - BaseFieldOverride.php in core/
lib/ Drupal/ Core/ Field/ Entity/ BaseFieldOverride.php  - BaseFieldOverrideTest.php in core/
tests/ Drupal/ KernelTests/ Core/ Field/ Entity/ BaseFieldOverrideTest.php  - BlockContent.php in core/
modules/ block_content/ src/ Entity/ BlockContent.php  - BlockContentUpdateTest.php in core/
modules/ block_content/ tests/ src/ Functional/ Update/ BlockContentUpdateTest.php  - block_content.install in core/
modules/ block_content/ block_content.install  - Install, update and uninstall functions for the block_content module.
 - Comment.php in core/
modules/ comment/ src/ Entity/ Comment.php  - CommentTestBaseField.php in core/
modules/ comment/ tests/ modules/ comment_base_field_test/ src/ Entity/ CommentTestBaseField.php  - contact_storage_test.module in core/
modules/ contact/ tests/ modules/ contact_storage_test/ contact_storage_test.module  - Contains custom contact message functionality for ContactStorageTest.
 - ContentEntityBase.php in core/
lib/ Drupal/ Core/ Entity/ ContentEntityBase.php  - ContentEntityBaseUnitTest.php in core/
tests/ Drupal/ Tests/ Core/ Entity/ ContentEntityBaseUnitTest.php  - ContentModerationState.php in core/
modules/ content_moderation/ src/ Entity/ ContentModerationState.php  - ContentTranslationHandler.php in core/
modules/ content_translation/ src/ ContentTranslationHandler.php  - DefaultTableMappingIntegrationTest.php in core/
tests/ Drupal/ KernelTests/ Core/ Entity/ DefaultTableMappingIntegrationTest.php  - entity.api.php in core/
lib/ Drupal/ Core/ Entity/ entity.api.php  - Hooks and documentation related to entities.
 - EntityAdapterUnitTest.php in core/
tests/ Drupal/ Tests/ Core/ Entity/ TypedData/ EntityAdapterUnitTest.php  - EntityDefinitionTestTrait.php in core/
modules/ system/ src/ Tests/ Entity/ EntityDefinitionTestTrait.php  - EntityDefinitionTestTrait.php in core/
modules/ system/ tests/ src/ Functional/ Entity/ Traits/ EntityDefinitionTestTrait.php  - EntityDefinitionUpdateManager.php in core/
lib/ Drupal/ Core/ Entity/ EntityDefinitionUpdateManager.php  - EntityDefinitionUpdateTest.php in core/
tests/ Drupal/ KernelTests/ Core/ Entity/ EntityDefinitionUpdateTest.php  - EntityFieldManager.php in core/
lib/ Drupal/ Core/ Entity/ EntityFieldManager.php  - EntityFieldManagerTest.php in core/
tests/ Drupal/ Tests/ Core/ Entity/ EntityFieldManagerTest.php  - Contains \Drupal\Tests\Core\Entity\EntityFieldManagerTest.
 - EntityFieldTest.php in core/
tests/ Drupal/ KernelTests/ Core/ Entity/ EntityFieldTest.php  - EntityKeysTest.php in core/
tests/ Drupal/ KernelTests/ Core/ Entity/ EntityKeysTest.php  - EntityOwnerTrait.php in core/
modules/ user/ src/ EntityOwnerTrait.php  - EntityPublishedTrait.php in core/
lib/ Drupal/ Core/ Entity/ EntityPublishedTrait.php  - EntityReferenceFieldTest.php in core/
tests/ Drupal/ KernelTests/ Core/ Entity/ EntityReferenceFieldTest.php  - EntityReferenceSupportedNewEntitiesConstraintValidatorTest.php in core/
modules/ workspaces/ tests/ src/ Kernel/ EntityReferenceSupportedNewEntitiesConstraintValidatorTest.php  - EntitySchemaSubscriber.php in core/
modules/ workspaces/ src/ EventSubscriber/ EntitySchemaSubscriber.php  - EntitySchemaSubscriber.php in core/
modules/ system/ tests/ modules/ entity_test_update/ src/ EventSubscriber/ EntitySchemaSubscriber.php  - EntitySchemaTest.php in core/
tests/ Drupal/ KernelTests/ Core/ Entity/ EntitySchemaTest.php  - EntitySerializedField.php in core/
modules/ system/ tests/ modules/ entity_test/ src/ Entity/ EntitySerializedField.php  - EntityTest.php in core/
modules/ system/ tests/ modules/ entity_test/ src/ Entity/ EntityTest.php  - EntityTestBase.php in core/
modules/ migrate/ tests/ src/ Unit/ Plugin/ migrate/ destination/ EntityTestBase.php  - Contains \Drupal\Tests\migrate\Unit\Plugin\migrate\destination\EntityTestBase
 - EntityTestBaseFieldDisplay.php in core/
modules/ system/ tests/ modules/ entity_test/ src/ Entity/ EntityTestBaseFieldDisplay.php  - EntityTestComputedField.php in core/
modules/ system/ tests/ modules/ entity_test/ src/ Entity/ EntityTestComputedField.php  - EntityTestConstraints.php in core/
modules/ system/ tests/ modules/ entity_test/ src/ Entity/ EntityTestConstraints.php  - EntityTestConstraintViolation.php in core/
modules/ system/ tests/ modules/ entity_test/ src/ Entity/ EntityTestConstraintViolation.php  - EntityTestDefaultValue.php in core/
modules/ system/ tests/ modules/ entity_test/ src/ Entity/ EntityTestDefaultValue.php  - EntityTestFieldMethods.php in core/
modules/ system/ tests/ modules/ entity_test/ src/ Entity/ EntityTestFieldMethods.php  - EntityTestMapField.php in core/
modules/ system/ tests/ modules/ entity_test/ src/ Entity/ EntityTestMapField.php  - EntityTestMulChanged.php in core/
modules/ system/ tests/ modules/ entity_test/ src/ Entity/ EntityTestMulChanged.php  - EntityTestMulDefaultValue.php in core/
modules/ system/ tests/ modules/ entity_test/ src/ Entity/ EntityTestMulDefaultValue.php  - EntityTestMulRev.php in core/
modules/ system/ tests/ modules/ entity_test/ src/ Entity/ EntityTestMulRev.php  - EntityTestMulRevChanged.php in core/
modules/ system/ tests/ modules/ entity_test/ src/ Entity/ EntityTestMulRevChanged.php  - EntityTestRev.php in core/
modules/ system/ tests/ modules/ entity_test/ src/ Entity/ EntityTestRev.php  - EntityTestStringId.php in core/
modules/ system/ tests/ modules/ entity_test/ src/ Entity/ EntityTestStringId.php  - EntityTestTest.php in core/
modules/ jsonapi/ tests/ src/ Functional/ EntityTestTest.php  - EntityTestUpdate.php in core/
modules/ system/ tests/ modules/ entity_test_update/ src/ Entity/ EntityTestUpdate.php  - EntityTestWithBundle.php in core/
modules/ system/ tests/ modules/ entity_test/ src/ Entity/ EntityTestWithBundle.php  - EntityTestWithRevisionLog.php in core/
modules/ system/ tests/ modules/ entity_test_revlog/ src/ Entity/ EntityTestWithRevisionLog.php  - EntityTypedDataDefinitionTest.php in core/
tests/ Drupal/ KernelTests/ Core/ Entity/ EntityTypedDataDefinitionTest.php  - EntityTypeInfo.php in core/
modules/ content_moderation/ src/ EntityTypeInfo.php  - EntityTypeInfo.php in core/
modules/ workspaces/ src/ EntityTypeInfo.php  - EntityUpdateToPublishableTest.php in core/
modules/ system/ tests/ src/ Functional/ Update/ EntityUpdateToPublishableTest.php  - EntityViewsDataTest.php in core/
modules/ views/ tests/ src/ Unit/ EntityViewsDataTest.php  - Contains \Drupal\Tests\views\Unit\EntityViewsDataTest.
 - entity_reference_test.module in core/
modules/ system/ tests/ modules/ entity_reference_test/ entity_reference_test.module  - Helper module for the Entity Reference tests.
 - entity_rev_pub_updates_8400.inc in core/
modules/ system/ tests/ modules/ entity_test_update/ update/ entity_rev_pub_updates_8400.inc  - Defines the 8400 db update for the "entity_rev_pub_updates" group.
 - entity_schema_test.module in core/
modules/ system/ tests/ modules/ entity_schema_test/ entity_schema_test.module  - Test module for the entity API providing a bundle field.
 - entity_test.module in core/
modules/ system/ tests/ modules/ entity_test/ entity_test.module  - Test module for the entity API providing several entity types for testing.
 - entity_test_update.module in core/
modules/ system/ tests/ modules/ entity_test_update/ entity_test_update.module  - Provides an entity type for testing definition and schema updates.
 - Feed.php in core/
modules/ aggregator/ src/ Entity/ Feed.php  - FieldableEntityDefinitionUpdateTest.php in core/
tests/ Drupal/ KernelTests/ Core/ Entity/ FieldableEntityDefinitionUpdateTest.php  - FieldAPIHandlerTrait.php in core/
modules/ views/ src/ FieldAPIHandlerTrait.php  - FieldDefinitionIntegrityTest.php in core/
modules/ field/ tests/ src/ Kernel/ FieldDefinitionIntegrityTest.php  - FieldItemDataDefinition.php in core/
lib/ Drupal/ Core/ Field/ TypedData/ FieldItemDataDefinition.php  - FieldSettingsTest.php in core/
tests/ Drupal/ KernelTests/ Core/ Field/ FieldSettingsTest.php  - FieldStorageDefinition.php in core/
modules/ system/ tests/ modules/ entity_test/ src/ FieldStorageDefinition.php  - FieldTypePluginManagerTest.php in core/
modules/ field/ tests/ src/ Kernel/ FieldTypePluginManagerTest.php  - File.php in core/
modules/ file/ src/ Entity/ File.php  - FormatterPluginManagerTest.php in core/
modules/ field/ tests/ src/ Kernel/ FormatterPluginManagerTest.php  - Item.php in core/
modules/ aggregator/ src/ Entity/ Item.php  - link_test_base_field.module in core/
modules/ link/ tests/ modules/ link_test_base_field/ link_test_base_field.module  - Contains main module functions.
 - MapBaseFieldTest.php in core/
tests/ Drupal/ KernelTests/ Core/ Field/ MapBaseFieldTest.php  - Media.php in core/
modules/ media/ src/ Entity/ Media.php  - MediaLibraryWidgetTest.php in core/
modules/ media_library/ tests/ src/ Kernel/ MediaLibraryWidgetTest.php  - MediaTypeForm.php in core/
modules/ media/ src/ MediaTypeForm.php  - MenuLinkContent.php in core/
modules/ menu_link_content/ src/ Entity/ MenuLinkContent.php  - menu_link_content.post_update.php in core/
modules/ menu_link_content/ menu_link_content.post_update.php  - Post update functions for the Menu link content module.
 - Message.php in core/
modules/ contact/ src/ Entity/ Message.php  - node.install in core/
modules/ node/ node.install  - Install, update and uninstall functions for the node module.
 - Node.php in core/
modules/ node/ src/ Entity/ Node.php  - NoLanguageEntityTest.php in core/
modules/ language/ tests/ language_test/ src/ Entity/ NoLanguageEntityTest.php  - path.module in core/
modules/ path/ path.module  - Enables users to rename URLs.
 - PathAlias.php in core/
modules/ path_alias/ src/ Entity/ PathAlias.php  - RecursiveContextualValidatorTest.php in core/
tests/ Drupal/ KernelTests/ Core/ TypedData/ RecursiveContextualValidatorTest.php  - rest_test.module in core/
modules/ rest/ tests/ modules/ rest_test/ rest_test.module  - Contains hook implementations for testing REST module.
 - RevisionLogEntityTrait.php in core/
lib/ Drupal/ Core/ Entity/ RevisionLogEntityTrait.php  - Shortcut.php in core/
modules/ shortcut/ src/ Entity/ Shortcut.php  - Sql.php in core/
modules/ migrate/ src/ Plugin/ migrate/ id_map/ Sql.php  - SqlContentEntityStorageSchema.php in core/
lib/ Drupal/ Core/ Entity/ Sql/ SqlContentEntityStorageSchema.php  - SqlContentEntityStorageSchemaConverter.php in core/
lib/ Drupal/ Core/ Entity/ Sql/ SqlContentEntityStorageSchemaConverter.php  - SqlContentEntityStorageSchemaTest.php in core/
tests/ Drupal/ KernelTests/ Core/ Entity/ Sql/ SqlContentEntityStorageSchemaTest.php  - StringIdEntityTest.php in core/
modules/ migrate/ tests/ modules/ migrate_entity_test/ src/ Entity/ StringIdEntityTest.php  - system.install in core/
modules/ system/ system.install  - Install, update and uninstall functions for the system module.
 - taxonomy.install in core/
modules/ taxonomy/ taxonomy.install  - Install, update and uninstall functions for the taxonomy module.
 - taxonomy.post_update.php in core/
modules/ taxonomy/ taxonomy.post_update.php  - Post update functions for Taxonomy.
 - Term.php in core/
modules/ taxonomy/ src/ Entity/ Term.php  - TestItemTest.php in core/
modules/ field/ tests/ src/ Kernel/ TestItemTest.php  - TypedDataTest.php in core/
tests/ Drupal/ KernelTests/ Core/ TypedData/ TypedDataTest.php  - user.module in core/
modules/ user/ user.module  - Enables the user registration and login system.
 - User.php in core/
modules/ user/ src/ Entity/ User.php  - ValidReferenceConstraintValidatorTest.php in core/
tests/ Drupal/ KernelTests/ Core/ Entity/ ValidReferenceConstraintValidatorTest.php  - views_entity_test.module in core/
modules/ views/ tests/ modules/ views_entity_test/ views_entity_test.module  - Contains main module functionality.
 - WidgetPluginManagerTest.php in core/
modules/ field/ tests/ src/ Kernel/ WidgetPluginManagerTest.php  - Workspace.php in core/
modules/ workspaces/ src/ Entity/ Workspace.php  - workspaces.install in core/
modules/ workspaces/ workspaces.install  - Contains install, update and uninstall functions for the Workspaces module.