10 files declare their use of EntityTypeManagerInterface in Zircon Profile 8

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

Contains \Drupal\Tests\Core\Entity\EntityFieldManagerTest.

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

Contains \Drupal\Tests\Core\Entity\EntityManagerTest.

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

Contains \Drupal\Tests\Core\Entity\EntityRepositoryTest.

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

Contains \Drupal\Tests\Core\Entity\EntityTypeBundleInfoTest.

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

Contains \Drupal\Tests\Core\Entity\EntityTypeManagerTest.

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

Contains \Drupal\Tests\Core\Entity\EntityTypeRepositoryTest.

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

Contains \Drupal\Core\Field\FieldDefinitionListener.

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

Contains \Drupal\Tests\Core\Field\FieldDefinitionListenerTest.

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

Contains \Drupal\Core\Field\FieldStorageDefinitionListener.

ValidReferenceConstraintValidator.php in core/lib/Drupal/Core/Entity/Plugin/Validation/Constraint/ValidReferenceConstraintValidator.php

Contains \Drupal\Core\Entity\Plugin\Validation\Constraint\ValidReferenceConstraintValidator.