7 uses of DRUPAL_REQUIRED

CommentFormController::actions in drupal/core/modules/comment/lib/Drupal/comment/CommentFormController.php
Overrides Drupal\Core\Entity\EntityFormController::actions().
CommentInterfaceTest::testCommentInterface in drupal/core/modules/comment/lib/Drupal/comment/Tests/CommentInterfaceTest.php
Tests the comment interface.
CommentTestBase::postComment in drupal/core/modules/comment/lib/Drupal/comment/Tests/CommentTestBase.php
Posts a comment.
CommentTestBase::setCommentPreview in drupal/core/modules/comment/lib/Drupal/comment/Tests/CommentTestBase.php
Sets the value governing the previewing mode for the comment form.
LinkFieldTest::testLinkTitle in drupal/core/modules/field/modules/link/lib/Drupal/link/Tests/LinkFieldTest.php
Tests the title settings of a link field.
link_field_widget_form in drupal/core/modules/field/modules/link/link.module
Implements hook_field_widget_form().
NodeFormController::actions in drupal/core/modules/node/lib/Drupal/node/NodeFormController.php
Overrides Drupal\Core\Entity\EntityFormController::actions().