diff --git a/core/lib/Drupal/Core/CacheDecorator/AliasManagerCacheDecorator.php b/core/lib/Drupal/Core/CacheDecorator/AliasManagerCacheDecorator.php
index f86b2ff..cf46231 100644
--- a/core/lib/Drupal/Core/CacheDecorator/AliasManagerCacheDecorator.php
+++ b/core/lib/Drupal/Core/CacheDecorator/AliasManagerCacheDecorator.php
@@ -55,14 +55,14 @@ public function __construct(AliasManagerInterface $alias_manager, CacheBackendIn
   }
 
   /**
-   * Implements \Drupal\Core\CacheDecorator\CacheDecoratorInterface::setCacheKey().
+   * {@inheritdoc}
    */
   public function setCacheKey($key) {
     $this->cacheKey = $key;
   }
 
   /**
-   * Implements \Drupal\Core\CacheDecorator\CacheDecoratorInterface::writeCache().
+   * {@inheritdoc}
    *
    * Cache an array of the system paths available on each page. We assume
    * that aliases will be needed for the majority of these paths during
@@ -81,7 +81,7 @@ public function writeCache() {
   }
 
   /**
-   * Implements \Drupal\Core\Path\AliasManagerInterface::getSystemPath().
+   * {@inheritdoc}
    */
   public function getSystemPath($path, $path_language = NULL) {
     $system_path = $this->aliasManager->getSystemPath($path, $path_language);
@@ -98,28 +98,28 @@ public function getSystemPath($path, $path_language = NULL) {
   }
 
   /**
-   * Implements \Drupal\Core\Path\AliasManagerInterface::getPathAlias().
+   * {@inheritdoc}
    */
   public function getPathAlias($path, $path_language = NULL) {
     return $this->aliasManager->getPathAlias($path, $path_language);
   }
 
   /**
-   * Implements \Drupal\Core\Path\AliasManagerInterface::getPathLookups().
+   * {@inheritdoc}
    */
   public function getPathLookups() {
     return $this->aliasManager->getPathLookups();
   }
 
   /**
-   * Implements \Drupal\Core\Path\AliasManagerInterface::preloadPathLookups().
+   * {@inheritdoc}
    */
   public function preloadPathLookups(array $path_list) {
     $this->aliasManager->preloadPathLookups($path_list);
   }
 
   /**
-   * Implements \Drupal\Core\Path\AliasManagerInterface::cacheClear().
+   * {@inheritdoc}
    */
   public function cacheClear() {
     $this->cache->delete($this->cacheKey);
diff --git a/core/lib/Drupal/Core/Path/Path.php b/core/lib/Drupal/Core/Path/Path.php
index 0ac13d7..024b297 100644
--- a/core/lib/Drupal/Core/Path/Path.php
+++ b/core/lib/Drupal/Core/Path/Path.php
@@ -18,6 +18,27 @@
 class Path {
 
   /**
+   * The INSERT event occurs when a new path alias is inserted.
+   *
+   * @var string
+   */
+  const INSERT = 'path.insert';
+
+  /**
+   * The UPDATE event occurs when an existing path alias is updated.
+   *
+   * @var string
+   */
+  const UPDATE = 'path.update';
+
+  /**
+   * The DELETE event occurs when a path alias is deleted.
+   *
+   * @var string
+   */
+  const DELETE = 'path.delete';
+
+  /**
    * The database connection.
    *
    * @var \Drupal\Core\Database\Connection
@@ -82,7 +103,7 @@ public function save($source, $alias, $langcode = Language::LANGCODE_NOT_SPECIFI
         ->fields($fields);
       $pid = $query->execute();
       $fields['pid'] = $pid;
-      $hook = 'insert';
+      $operation = 'insert';
     }
     else {
       $fields['pid'] = $pid;
@@ -90,10 +111,11 @@ public function save($source, $alias, $langcode = Language::LANGCODE_NOT_SPECIFI
         ->fields($fields)
         ->condition('pid', $pid);
       $pid = $query->execute();
-      $hook = 'update';
+      $operation = 'update';
     }
     if ($pid) {
-      $this->event_dispatcher->dispatch('path.' . $hook, new PathInsertUpdateEvent($fields));
+      $event = $operation == 'update' ? PATH::UPDATE : Path::INSERT;
+      $this->event_dispatcher->dispatch($event, new PathInsertUpdateEvent($fields));
       return $fields;
     }
     return FALSE;
@@ -137,7 +159,7 @@ public function delete($conditions) {
       $query->condition($field, $value);
     }
     $deleted = $query->execute();
-    $this->event_dispatcher->dispatch('path.delete', new PathDeleteEvent($path));
+    $this->event_dispatcher->dispatch(Path::DELETE, new PathDeleteEvent($path));
     return $deleted;
   }
 }
diff --git a/core/lib/Drupal/Core/Path/PathCRUDSubscriber.php b/core/lib/Drupal/Core/Path/PathCRUDSubscriber.php
index a25347c..454c764 100644
--- a/core/lib/Drupal/Core/Path/PathCRUDSubscriber.php
+++ b/core/lib/Drupal/Core/Path/PathCRUDSubscriber.php
@@ -42,39 +42,15 @@ public function clearAliasManagerCaches() {
   }
 
   /**
-   * Invokes hook_path_update().
-   */
-  public function hookPathUpdate(PathInsertUpdateEvent $event) {
-    $this->moduleHandler->invokeAll('path_update', $event->getFields());
-  }
-
-  /**
-   * Invokes hook_path_insert().
-   */
-  public function hookPathInsert(PathInsertUpdateEvent $event) {
-    $this->moduleHandler->invokeAll('path_insert', $event->getFields());
-  }
-
-  /**
-   * Invokes hook_path_delete().
-   */
-  public function hookPathDelete(PathDeleteEvent $event) {
-    $this->moduleHandler->invokeAll('path_delete', $event->getPath());
-  }
-
-  /**
    * Registers the methods in this class that should be listeners.
    *
    * @return array
    *   An array of event listener definitions.
    */
   static function getSubscribedEvents() {
-    $events['path.update'][] = array('hookPathUpdate');
-    $events['path.insert'][] = array('hookPathInsert');
-    $events['path.delete'][] = array('hookPathDelete');
-    $events['path.update'][] = array('clearAliasManagerCaches');
-    $events['path.insert'][] = array('clearAliasManagerCaches');
-    $events['path.delete'][] = array('clearAliasManagerCaches');
+    $events[Path::UPDATE][] = array('clearAliasManagerCaches');
+    $events[Path::INSERT][] = array('clearAliasManagerCaches');
+    $events[Path::DELETE][] = array('clearAliasManagerCaches');
     return $events;
   }
 }
diff --git a/core/modules/path/path.api.php b/core/modules/path/path.api.php
deleted file mode 100644
index c69b97d..0000000
--- a/core/modules/path/path.api.php
+++ /dev/null
@@ -1,73 +0,0 @@
-<?php
-
-/**
- * @file
- * Hooks provided by the Path module.
- */
-
-/**
- * @addtogroup hooks
- * @{
- */
-
-/**
- * Respond to a path being inserted.
- *
- * @param $path
- *   An associative array containing the following keys:
- *   - source: The internal system path.
- *   - alias: The URL alias.
- *   - pid: Unique path alias identifier.
- *   - langcode: The language code of the alias.
- *
- * @see \Drupal\Core\Path\Path::save()
- */
-function hook_path_insert($path) {
-  db_insert('mytable')
-    ->fields(array(
-      'alias' => $path['alias'],
-      'pid' => $path['pid'],
-    ))
-    ->execute();
-}
-
-/**
- * Respond to a path being updated.
- *
- * @param $path
- *   An associative array containing the following keys:
- *   - source: The internal system path.
- *   - alias: The URL alias.
- *   - pid: Unique path alias identifier.
- *   - langcode: The language code of the alias.
- *
- * @see \Drupal\Core\Path\Path::save()
- */
-function hook_path_update($path) {
-  db_update('mytable')
-    ->fields(array('alias' => $path['alias']))
-    ->condition('pid', $path['pid'])
-    ->execute();
-}
-
-/**
- * Respond to a path being deleted.
- *
- * @param $path
- *   An associative array containing the following keys:
- *   - source: The internal system path.
- *   - alias: The URL alias.
- *   - pid: Unique path alias identifier.
- *   - langcode: The language code of the alias.
- *
- * @see \Drupal\Core\Path\Path::delete()
- */
-function hook_path_delete($path) {
-  db_delete('mytable')
-    ->condition('pid', $path['pid'])
-    ->execute();
-}
-
-/**
- * @} End of "addtogroup hooks".
- */
diff --git a/core/modules/system/lib/Drupal/system/Tests/Routing/MockAliasManager.php b/core/modules/system/lib/Drupal/system/Tests/Routing/MockAliasManager.php
index 8625942..4523d70 100644
--- a/core/modules/system/lib/Drupal/system/Tests/Routing/MockAliasManager.php
+++ b/core/modules/system/lib/Drupal/system/Tests/Routing/MockAliasManager.php
@@ -60,7 +60,7 @@ public function addAlias($path, $alias, $path_language = NULL) {
   }
 
   /**
-   * Implements \Drupal\Core\Path\AliasManagerInterface::getSystemPath().
+   * {@inheritdoc}
    */
   public function getSystemPath($path, $path_language = NULL) {
     $language = $path_language ?: $this->defaultLanguage;
@@ -68,7 +68,7 @@ public function getSystemPath($path, $path_language = NULL) {
   }
 
   /**
-   * Implements \Drupal\Core\Path\AliasManagerInterface::getPathAlias().
+   * {@inheritdoc}
    */
   public function getPathAlias($path, $path_language = NULL) {
     $language = $path_language ?: $this->defaultLanguage;
@@ -77,21 +77,21 @@ public function getPathAlias($path, $path_language = NULL) {
   }
 
   /**
-   * Implements \Drupal\Core\Path\AliasManagerInterface::getPathLookups().
+   * {@inheritdoc}
    */
   public function getPathLookups() {
     return array_keys($this->lookedUp);
   }
 
   /**
-   * Implements \Drupal\Core\Path\AliasManagerInterface::preloadPathLookups().
+   * {@inheritdoc}
    */
   public function preloadPathLookups(array $path_list) {
     // Not needed.
   }
 
   /**
-   * Implements \Drupal\Core\Path\AliasManagerInterface::cacheClear().
+   * {@inheritdoc}
    */
   public function cacheClear() {
     // Not needed.
diff --git a/core/modules/system/tests/modules/path_test/path_test.info.yml b/core/modules/system/tests/modules/path_test/path_test.info.yml
deleted file mode 100644
index 57a5893..0000000
--- a/core/modules/system/tests/modules/path_test/path_test.info.yml
+++ /dev/null
@@ -1,7 +0,0 @@
-name: 'Hook path tests'
-type: module
-description: 'Support module for path hook testing.'
-package: Testing
-version: VERSION
-core: 8.x
-hidden: true
diff --git a/core/modules/system/tests/modules/path_test/path_test.module b/core/modules/system/tests/modules/path_test/path_test.module
deleted file mode 100644
index df03931..0000000
--- a/core/modules/system/tests/modules/path_test/path_test.module
+++ /dev/null
@@ -1,22 +0,0 @@
-<?php
-
-/**
- * @file
- * Helper module for the path tests.
- */
-
-/**
- * Resets the path test results.
- */
-function path_test_reset() {
-  \Drupal::state()->set('path_test.results', array());
-}
-
-/**
- * Implements hook_path_update().
- */
-function path_test_path_update($path) {
-  $results = \Drupal::state()->get('path_test.results') ?: array();
-  $results['hook_path_update'] = $path;
-  \Drupal::state()->set('path_test.results', $results);
-}