6 files declare their use of CompositeConstraintBase in Drupal 9
- CommentNameConstraint.php in core/
modules/ comment/ src/ Plugin/ Validation/ Constraint/ CommentNameConstraint.php - EntityConstraintViolationList.php in core/
lib/ Drupal/ Core/ Entity/ EntityConstraintViolationList.php - EntityTestCompositeConstraint.php in core/
modules/ system/ tests/ modules/ entity_test/ src/ Plugin/ Validation/ Constraint/ EntityTestCompositeConstraint.php - EntityValidationTest.php in core/
tests/ Drupal/ KernelTests/ Core/ Entity/ EntityValidationTest.php - MenuTreeHierarchyConstraint.php in core/
modules/ menu_link_content/ src/ Plugin/ Validation/ Constraint/ MenuTreeHierarchyConstraint.php - TaxonomyTermHierarchyConstraint.php in core/
modules/ taxonomy/ src/ Plugin/ Validation/ Constraint/ TaxonomyTermHierarchyConstraint.php