38 files declare their use of DefaultPluginManager in Zircon Profile 8.0

ActionManager.php in core/lib/Drupal/Core/Action/ActionManager.php

Contains \Drupal\Core\Action\ActionManager.

AggregatorPluginManager.php in core/modules/aggregator/src/Plugin/AggregatorPluginManager.php

Contains \Drupal\aggregator\Plugin\AggregatorPluginManager.

ArchiverManager.php in core/lib/Drupal/Core/Archiver/ArchiverManager.php

Contains \Drupal\Core\Archiver\ArchiverManager.

BlockManager.php in core/lib/Drupal/Core/Block/BlockManager.php

Contains \Drupal\Core\Block\BlockManager.

BreakpointManager.php in core/modules/breakpoint/src/BreakpointManager.php

Contains \Drupal\breakpoint\BreakpointManager.

CategorizingPluginManagerTraitTest.php in core/tests/Drupal/Tests/Core/Plugin/CategorizingPluginManagerTraitTest.php

Contains \Drupal\Tests\Core\Plugin\CategorizingPluginManagerTraitTest.

CKEditorPluginManager.php in core/modules/ckeditor/src/CKEditorPluginManager.php

Contains \Drupal\ckeditor\CKEditorPluginManager.

ConditionManager.php in core/lib/Drupal/Core/Condition/ConditionManager.php

Contains \Drupal\Core\Condition\ConditionManager.

ConfigMapperManager.php in core/modules/config_translation/src/ConfigMapperManager.php

Contains \Drupal\config_translation\ConfigMapperManager.

ConstraintManager.php in core/lib/Drupal/Core/Validation/ConstraintManager.php

Contains \Drupal\Core\Validation\ConstraintManager.

ContextualLinkManager.php in core/lib/Drupal/Core/Menu/ContextualLinkManager.php

Contains \Drupal\Core\Menu\ContextualLinkManager.

DefaultsTestPluginManager.php in core/modules/system/tests/modules/plugin_test/src/Plugin/DefaultsTestPluginManager.php

Contains \Drupal\plugin_test\Plugin\DefaultsTestPluginManager.

EditorManager.php in core/modules/editor/src/Plugin/EditorManager.php

Contains \Drupal\editor\Plugin\EditorManager.

ElementInfoManager.php in core/lib/Drupal/Core/Render/ElementInfoManager.php

Contains \Drupal\Core\Render\ElementInfoManager.

EntityTypeManager.php in core/lib/Drupal/Core/Entity/EntityTypeManager.php

Contains \Drupal\Core\Entity\EntityTypeManager.

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

Contains \Drupal\Core\Field\FieldTypePluginManager.

FilterPluginManager.php in core/modules/filter/src/FilterPluginManager.php

Contains \Drupal\filter\FilterPluginManager.

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

Contains \Drupal\Core\Field\FormatterPluginManager.

ImageEffectManager.php in core/modules/image/src/ImageEffectManager.php

Contains \Drupal\image\ImageEffectManager.

ImageToolkitManager.php in core/lib/Drupal/Core/ImageToolkit/ImageToolkitManager.php

Contains \Drupal\Core\ImageToolkit\ImageToolkitManager.

ImageToolkitOperationManager.php in core/lib/Drupal/Core/ImageToolkit/ImageToolkitOperationManager.php

Contains \Drupal\Core\ImageToolkit\ImageToolkitOperationManager.

InPlaceEditorManager.php in core/modules/quickedit/src/Plugin/InPlaceEditorManager.php

Contains \Drupal\quickedit\Plugin\InPlaceEditorManager.

LanguageNegotiationMethodManager.php in core/modules/language/src/LanguageNegotiationMethodManager.php

Contains \Drupal\language\LanguageNegotiationMethodManager.

LocalActionManager.php in core/lib/Drupal/Core/Menu/LocalActionManager.php

Contains \Drupal\Core\Menu\LocalActionManager.

LocalTaskManager.php in core/lib/Drupal/Core/Menu/LocalTaskManager.php

Contains \Drupal\Core\Menu\LocalTaskManager.

MailManager.php in core/lib/Drupal/Core/Mail/MailManager.php

Contains \Drupal\Core\Mail\MailManager.

MigratePluginManager.php in core/modules/migrate/src/Plugin/MigratePluginManager.php

Contains \Drupal\migrate\Plugin\MigratePluginManager.

QueueWorkerManager.php in core/lib/Drupal/Core/Queue/QueueWorkerManager.php

Contains \Drupal\Core\Queue\QueueWorkerManager.

ResourcePluginManager.php in core/modules/rest/src/Plugin/Type/ResourcePluginManager.php

Contains \Drupal\rest\Plugin\Type\ResourcePluginManager.

SearchPluginManager.php in core/modules/search/src/SearchPluginManager.php

Contains \Drupal\search\SearchPluginManager.

SelectionPluginManager.php in core/lib/Drupal/Core/Entity/EntityReferenceSelection/SelectionPluginManager.php

Contains \Drupal\Core\Entity\EntityReferenceSelection\SelectionPluginManager.

TestPluginManager.php in core/tests/Drupal/Tests/Core/Plugin/TestPluginManager.php

Contains \Drupal\Tests\Core\Plugin\TestPluginManager.

TipPluginManager.php in core/modules/tour/src/TipPluginManager.php

Contains \Drupal\tour\TipPluginManager.

TypedDataManager.php in core/lib/Drupal/Core/TypedData/TypedDataManager.php

Contains \Drupal\Core\TypedData\TypedDataManager.

VariantManager.php in core/lib/Drupal/Core/Display/VariantManager.php

Contains \Drupal\Core\Display\VariantManager.

ViewsHandlerManager.php in core/modules/views/src/Plugin/ViewsHandlerManager.php

Contains \Drupal\views\Plugin\ViewsHandlerManager.

ViewsPluginManager.php in core/modules/views/src/Plugin/ViewsPluginManager.php

Contains \Drupal\views\Plugin\ViewsPluginManager.

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

Contains \Drupal\Core\Field\WidgetPluginManager.