10 files declare their use of ConstraintViolationList in Zircon Profile 8

ConstraintViolationBuilder.php in vendor/symfony/validator/Violation/ConstraintViolationBuilder.php

ConstraintViolationBuilder.php in core/lib/Drupal/Core/TypedData/Validation/ConstraintViolationBuilder.php

Contains \Drupal\Core\TypedData\Validation\ConstraintViolationBuilder.

ConstraintViolationListTest.php in vendor/symfony/validator/Tests/ConstraintViolationListTest.php

ContextAwarePluginBase.php in core/lib/Drupal/Component/Plugin/ContextAwarePluginBase.php

Contains \Drupal\Component\Plugin\ContextAwarePluginBase.

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

Contains \Drupal\Core\Entity\EntityConstraintViolationList.

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

Contains \Drupal\Core\Entity\Entity\EntityFormDisplay.

ExecutionContext.php in vendor/symfony/validator/Context/ExecutionContext.php

ExecutionContext.php in core/lib/Drupal/Core/TypedData/Validation/ExecutionContext.php

Contains \Drupal\Core\TypedData\Validation\ExecutionContext.

LegacyExecutionContextTest.php in vendor/symfony/validator/Tests/LegacyExecutionContextTest.php

StubGlobalExecutionContext.php in vendor/symfony/validator/Tests/Fixtures/StubGlobalExecutionContext.php