https://api.drupal.org/api/drupal/core%21tests%21Drupal%21Tests%21Core%21Entity%21EntityConstraintViolationListTest.php/9
EntityConstraintViolationListTest.php | Drupal API
phpdrupalapi
https://api.drupal.org/api/drupal/core%21tests%21Drupal%21Tests%21Core%21Entity%21EntityConstraintViolationListTest.php/function/EntityConstraintViolationListTest%3A%3AsetupConstraintListWithCompositeConstraint/11.x
function EntityConstraintViolationListTest::setupConstraintListWithCompositeConstraint | Drupal API
functiondrupalapi