24 files declare their use of NotFoundHttpException

book.pages.inc in drupal/core/modules/book/book.pages.inc
User page callbacks for the book module.
comment.admin.inc in drupal/core/modules/comment/comment.admin.inc
Admin page callbacks for the Comment module.
comment.module in drupal/core/modules/comment/comment.module
Enables users to comment on published content.
comment.pages.inc in drupal/core/modules/comment/comment.pages.inc
User page callbacks for the Comment module.
common.inc in drupal/core/includes/common.inc
Common functions that many Drupal modules will need to reference.
contact.pages.inc in drupal/core/modules/contact/contact.pages.inc
Page callbacks for the Contact module.
DBLogResource.php in drupal/core/modules/rest/lib/Drupal/rest/Plugin/rest/resource/DBLogResource.php
Definition of Drupal\rest\Plugin\rest\resource\DBLogResource.
EntityResource.php in drupal/core/modules/rest/lib/Drupal/rest/Plugin/rest/resource/EntityResource.php
Definition of Drupal\rest\Plugin\rest\resource\EntityResource.
ExceptionHandlerTest.php in drupal/core/vendor/symfony/http-kernel/Symfony/Component/HttpKernel/Tests/Debug/ExceptionHandlerTest.php
Feed.php in drupal/core/modules/views/lib/Drupal/views/Plugin/views/display/Feed.php
Contains Drupal\views\Plugin\views\display\Feed.
file.inc in drupal/core/includes/file.inc
API for handling file uploads and server file management.
FlattenExceptionTest.php in drupal/core/vendor/symfony/http-kernel/Symfony/Component/HttpKernel/Tests/Exception/FlattenExceptionTest.php
HttpKernel.php in drupal/core/vendor/symfony/http-kernel/Symfony/Component/HttpKernel/HttpKernel.php
language.admin.inc in drupal/core/modules/language/language.admin.inc
Administration functions for language.module.
locale.pages.inc in drupal/core/modules/locale/locale.pages.inc
Interface translation summary, editing and deletion user interfaces.
openid_test.module in drupal/core/modules/openid/tests/openid_test.module
Dummy OpenID Provider used with SimpleTest.
Page.php in drupal/core/modules/views/lib/Drupal/views/Plugin/views/display/Page.php
Contains Drupal\views\Plugin\views\display\Page.
PathPluginBase.php in drupal/core/modules/views/lib/Drupal/views/Plugin/views/display/PathPluginBase.php
Contains Drupal\views\Plugin\views\display\PathPluginBase.
RouteProcessorSubscriber.php in drupal/core/lib/Drupal/Core/EventSubscriber/RouteProcessorSubscriber.php
Definition of Drupal\Core\EventSubscriber\RouteProcessorSubscriber.
RouterListener.php in drupal/core/vendor/symfony/http-kernel/Symfony/Component/HttpKernel/EventListener/RouterListener.php
statistics.admin.inc in drupal/core/modules/statistics/statistics.admin.inc
Admin page callbacks for the Statistics module.
statistics.pages.inc in drupal/core/modules/statistics/statistics.pages.inc
User page callbacks for the Statistics module.
user.module in drupal/core/modules/user/user.module
Enables the user registration and login system.
ViewFormControllerBase.php in drupal/core/modules/views/views_ui/lib/Drupal/views_ui/ViewFormControllerBase.php
Contains Drupal\views_ui\ViewFormControllerBase.