16 files declare their use of FieldTypePluginManagerInterface in Zircon Profile 8

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

Contains \Drupal\comment\Plugin\migrate\destination\EntityComment.

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

Contains \Drupal\migrate\Plugin\migrate\destination\EntityContentBase.

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

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

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

Contains \Drupal\field_ui\Form\EntityDisplayFormBase.

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

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

EntityFieldStorageConfig.php in core/modules/migrate_drupal/src/Plugin/migrate/destination/EntityFieldStorageConfig.php

Contains \Drupal\migrate_drupal\Plugin\migrate\destination\EntityFieldStorageConfig.

EntityFile.php in core/modules/file/src/Plugin/migrate/destination/EntityFile.php

Contains \Drupal\file\Plugin\migrate\destination\EntityFile.

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

Contains \Drupal\user\Plugin\migrate\destination\EntityUser.

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

Contains \Drupal\views\Plugin\views\field\Field.

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

Contains \Drupal\field_ui\FieldConfigListBuilder.

FieldConfigStorage.php in core/modules/field/src/FieldConfigStorage.php

Contains \Drupal\field\FieldConfigStorage.

FieldItemDeriver.php in core/lib/Drupal/Core/Field/Plugin/DataType/Deriver/FieldItemDeriver.php

Contains \Drupal\Core\Field\Plugin\DataType\Deriver\FieldItemDeriver.

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

Contains \Drupal\field_ui\Form\FieldStorageAddForm.

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

Contains \Drupal\Tests\field\Unit\FieldStorageConfigEntityUnitTest.

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

Contains \Drupal\field_ui\FieldStorageConfigListBuilder.

FieldStorageConfigStorage.php in core/modules/field/src/FieldStorageConfigStorage.php

Contains \Drupal\field\FieldStorageConfigStorage.