33 files declare their use of EntityManager

AggregatorController.php in drupal/core/modules/aggregator/lib/Drupal/aggregator/Controller/AggregatorController.php
Contains \Drupal\aggregator\Controller\AggregatorController.
BookManager.php in drupal/core/modules/book/lib/Drupal/book/BookManager.php
Contains \Drupal\book\BookManager.
BreakLockForm.php in drupal/core/modules/views_ui/lib/Drupal/views_ui/Form/BreakLockForm.php
Contains \Drupal\views_ui\Form\BreakLockForm.
BulkFormBase.php in drupal/core/modules/system/lib/Drupal/system/Plugin/views/field/BulkFormBase.php
Contains \Drupal\system\Plugin\views\field\BulkFormBase.
ConfigImporter.php in drupal/core/lib/Drupal/Core/Config/ConfigImporter.php
Contains \Drupal\Core\Config\ConfigImporter.
CustomBlockController.php in drupal/core/modules/block/custom_block/lib/Drupal/custom_block/Controller/CustomBlockController.php
Contains \Drupal\custom_block\Controller\CustomBlockController
DeleteMultiple.php in drupal/core/modules/node/lib/Drupal/node/Form/DeleteMultiple.php
Contains \Drupal\node\Form\DeleteMultiple.
DisplayOverview.php in drupal/core/modules/field_ui/lib/Drupal/field_ui/DisplayOverview.php
Contains \Drupal\field_ui\DisplayOverview.
EmailAction.php in drupal/core/modules/action/lib/Drupal/action/Plugin/Action/EmailAction.php
Contains \Drupal\action\Plugin\Action\EmailAction.
EntityConverter.php in drupal/core/lib/Drupal/Core/ParamConverter/EntityConverter.php
Contains Drupal\Core\ParamConverter\EntityConverter.
EntityListController.php in drupal/core/lib/Drupal/Core/Entity/Controller/EntityListController.php
Contains \Drupal\Core\Entity\Controller\EntityListController.
EntityReferenceAutocomplete.php in drupal/core/modules/entity_reference/lib/Drupal/entity_reference/EntityReferenceAutocomplete.php
Contains \Drupal\entity_reference/EntityReferenceAutocomplete.
EntityRow.php in drupal/core/modules/views/lib/Drupal/views/Plugin/views/row/EntityRow.php
Contains \Drupal\views\Plugin\views\row\EntityRow.
FieldDeleteForm.php in drupal/core/modules/field_ui/lib/Drupal/field_ui/Form/FieldDeleteForm.php
Contains \Drupal\field_ui\Form\FieldDeleteForm.
FieldEditForm.php in drupal/core/modules/field_ui/lib/Drupal/field_ui/Form/FieldEditForm.php
Contains \Drupal\field_ui\Form\FieldEditForm.
FieldInstanceFormBase.php in drupal/core/modules/field_ui/lib/Drupal/field_ui/Form/FieldInstanceFormBase.php
Contains \Drupal\field_ui\Form\FieldInstanceFormBase.
FieldInstanceStorageController.php in drupal/core/modules/field/lib/Drupal/field/FieldInstanceStorageController.php
Contains \Drupal\field\FieldInstanceStorageController.
FieldOverview.php in drupal/core/modules/field_ui/lib/Drupal/field_ui/FieldOverview.php
Contains \Drupal\field_ui\FieldOverview.
FieldStorageController.php in drupal/core/modules/field/lib/Drupal/field/FieldStorageController.php
Contains \Drupal\field\FieldStorageController.
FieldTranslationSynchronizer.php in drupal/core/modules/translation_entity/lib/Drupal/translation_entity/FieldTranslationSynchronizer.php
Contains \Drupal\translation_entity\FieldTranslationSynchronizer.
NodeBulkForm.php in drupal/core/modules/node/lib/Drupal/node/Plugin/views/field/NodeBulkForm.php
Contains \Drupal\node\Plugin\views\field\NodeBulkForm.
OpmlFeedAdd.php in drupal/core/modules/aggregator/lib/Drupal/aggregator/Form/OpmlFeedAdd.php
Contains \Drupal\aggregator\Form\OpmlFeedAdd.
OverviewBase.php in drupal/core/modules/field_ui/lib/Drupal/field_ui/OverviewBase.php
Contains \Drupal\field_ui\OverviewBase.
Query.php in drupal/core/lib/Drupal/Core/Config/Entity/Query/Query.php
Contains \Drupal\Core\Config\Entity\Query\Query.
Query.php in drupal/core/modules/field_sql_storage/lib/Drupal/field_sql_storage/Entity/Query.php
Definition of Drupal\field_sql_storage\Entity\Query.
QueryFactory.php in drupal/core/lib/Drupal/Core/Entity/Query/QueryFactory.php
Contains \Drupal\Core\Entity\Query\QueryFactory.
QueryFactory.php in drupal/core/lib/Drupal/Core/Config/Entity/Query/QueryFactory.php
Contains \Drupal\Core\Config\Entity\Query\QueryFactory.
QueryFactory.php in drupal/core/modules/field_sql_storage/lib/Drupal/field_sql_storage/Entity/QueryFactory.php
Contains \Drupal\field_sql_storage\Entity\QueryFactory.
RolesRid.php in drupal/core/modules/user/lib/Drupal/user/Plugin/views/argument/RolesRid.php
Contains \Drupal\user\Plugin\views\argument\RolesRid.
RouteSubscriber.php in drupal/core/modules/field_ui/lib/Drupal/field_ui/Routing/RouteSubscriber.php
Contains \Drupal\field_ui\Routing\RouteSubscriber.
ShortcutController.php in drupal/core/modules/shortcut/lib/Drupal/shortcut/Controller/ShortcutController.php
Contains \Drupal\shortcut\Controller\ShortCutController.
UserBulkForm.php in drupal/core/modules/user/lib/Drupal/user/Plugin/views/field/UserBulkForm.php
Contains \Drupal\user\Plugin\views\field\UserBulkForm.
ViewsUIController.php in drupal/core/modules/views_ui/lib/Drupal/views_ui/Controller/ViewsUIController.php
Contains \Drupal\views_ui\Controller\ViewsUIController.