16 files declare their use of MethodNotAllowedException

ApacheUrlMatcher.php in drupal/core/vendor/symfony/routing/Symfony/Component/Routing/Matcher/ApacheUrlMatcher.php
ChainMatcher.php in drupal/core/lib/Drupal/Core/Routing/ChainMatcher.php
Definition of Drupal\Core\Routing\ChainMatcher.
ChainMatcherTest.php in drupal/core/modules/system/lib/Drupal/system/Tests/Routing/ChainMatcherTest.php
Definition of Drupal\system\Tests\Routing\ChainMatcherTest.
FirstEntryFinalMatcherTest.php in drupal/core/modules/system/lib/Drupal/system/Tests/Routing/FirstEntryFinalMatcherTest.php
Definition of Drupal\system\Tests\Routing\NestedMatcherTest.
HttpMethodMatcher.php in drupal/core/lib/Drupal/Core/Routing/HttpMethodMatcher.php
Definition of Drupal\Core\Routing\HttpMethodMatcher.
HttpMethodMatcherTest.php in drupal/core/modules/system/lib/Drupal/system/Tests/Routing/HttpMethodMatcherTest.php
Definition of Drupal\system\Tests\Routing\HttpMethodMMatcherTest.
MockMatcher.php in drupal/core/modules/system/lib/Drupal/system/Tests/Routing/MockMatcher.php
Definition of Drupal\system\Tests\Routing\MockMatcher.
NestedMatcherTest.php in drupal/core/modules/system/lib/Drupal/system/Tests/Routing/NestedMatcherTest.php
Definition of Drupal\system\Tests\Routing\NestedMatcherTest.
RequestMatcherInterface.php in drupal/core/vendor/symfony/routing/Symfony/Component/Routing/Matcher/RequestMatcherInterface.php
RouterListener.php in drupal/core/vendor/symfony/http-kernel/Symfony/Component/HttpKernel/EventListener/RouterListener.php
UrlMatcher.php in drupal/core/vendor/symfony/routing/Symfony/Component/Routing/Matcher/UrlMatcher.php
UrlMatcherInterface.php in drupal/core/vendor/symfony/routing/Symfony/Component/Routing/Matcher/UrlMatcherInterface.php
UrlMatcherTest.php in drupal/core/vendor/symfony/routing/Symfony/Component/Routing/Tests/Matcher/UrlMatcherTest.php
url_matcher1.php in drupal/core/vendor/symfony/routing/Symfony/Component/Routing/Tests/Fixtures/dumper/url_matcher1.php
url_matcher2.php in drupal/core/vendor/symfony/routing/Symfony/Component/Routing/Tests/Fixtures/dumper/url_matcher2.php
url_matcher3.php in drupal/core/vendor/symfony/routing/Symfony/Component/Routing/Tests/Fixtures/dumper/url_matcher3.php