diff --git a/core/lib/Drupal/Component/Archiver/ArchiverInterface.php b/core/lib/Drupal/Component/Archiver/ArchiverInterface.php
index 3b2dc28..96d9992 100644
--- a/core/lib/Drupal/Component/Archiver/ArchiverInterface.php
+++ b/core/lib/Drupal/Component/Archiver/ArchiverInterface.php
@@ -13,18 +13,6 @@
 interface ArchiverInterface {
 
   /**
-   * Constructs a new archiver instance.
-   *
-   * @param string $file_path
-   *   The full system path of the archive to manipulate. Only local files
-   *   are supported. If the file does not yet exist, it will be created if
-   *   appropriate.
-   *
-   * @throws Drupal\Component\Archiver\ArchiverException
-   */
-  public function __construct($file_path);
-
-  /**
    * Adds the specified file or directory to the archive.
    *
    * @param string $file_path
diff --git a/core/lib/Drupal/Component/Archiver/Tar.php b/core/lib/Drupal/Component/Archiver/Tar.php
index 8b5ebda..f06f3e0 100644
--- a/core/lib/Drupal/Component/Archiver/Tar.php
+++ b/core/lib/Drupal/Component/Archiver/Tar.php
@@ -21,6 +21,13 @@
 
   /**
    * Constructs a Tar object.
+   *
+   * @param string $file_path
+   *   The full system path of the archive to manipulate. Only local files
+   *   are supported. If the file does not yet exist, it will be created if
+   *   appropriate.
+   *
+   * @throws Drupal\Component\Archiver\ArchiverException
    */
   public function __construct($file_path) {
     $this->tar = new ArchiveTar($file_path);
diff --git a/core/lib/Drupal/Component/Archiver/Zip.php b/core/lib/Drupal/Component/Archiver/Zip.php
index 47bfb67..3f0a066 100644
--- a/core/lib/Drupal/Component/Archiver/Zip.php
+++ b/core/lib/Drupal/Component/Archiver/Zip.php
@@ -24,10 +24,14 @@
   protected $zip;
 
   /**
-   * Constructs a Tar object.
+   * Constructs a Zip object.
    *
    * @param string $file_path
-   *   The full system path of the archive to manipulate.
+   *   The full system path of the archive to manipulate. Only local files
+   *   are supported. If the file does not yet exist, it will be created if
+   *   appropriate.
+   *
+   * @throws Drupal\Component\Archiver\ArchiverException
    */
   public function __construct($file_path) {
     $this->zip = new ZipArchive();
diff --git a/core/lib/Drupal/Core/Cache/CacheBackendInterface.php b/core/lib/Drupal/Core/Cache/CacheBackendInterface.php
index 9c4f8fc..ee1df76 100644
--- a/core/lib/Drupal/Core/Cache/CacheBackendInterface.php
+++ b/core/lib/Drupal/Core/Cache/CacheBackendInterface.php
@@ -55,14 +55,6 @@
   const CACHE_PERMANENT = 0;
 
   /**
-   * Constructs a new cache backend.
-   *
-   * @param $bin
-   *   The cache bin for which the object is created.
-   */
-  public function __construct($bin);
-
-  /**
    * Returns data from the persistent cache.
    *
    * Data may be stored as either plain text or as serialized data. cache_get()
diff --git a/core/lib/Drupal/Core/Cache/DatabaseBackend.php b/core/lib/Drupal/Core/Cache/DatabaseBackend.php
index 9ab6b11..a12ed13 100644
--- a/core/lib/Drupal/Core/Cache/DatabaseBackend.php
+++ b/core/lib/Drupal/Core/Cache/DatabaseBackend.php
@@ -29,7 +29,10 @@
   protected static $tagCache = array();
 
   /**
-   * Implements Drupal\Core\Cache\CacheBackendInterface::__construct().
+   * Constructs a DatabaseBackend object.
+   *
+   * @param string $bin
+   *   The cache bin for which the object is created.
    */
   public function __construct($bin) {
     // All cache tables should be prefixed with 'cache_', except for the
diff --git a/core/lib/Drupal/Core/Cache/MemoryBackend.php b/core/lib/Drupal/Core/Cache/MemoryBackend.php
index b17e06b..837df0e 100644
--- a/core/lib/Drupal/Core/Cache/MemoryBackend.php
+++ b/core/lib/Drupal/Core/Cache/MemoryBackend.php
@@ -29,7 +29,10 @@
   protected $invalidatedTags = array();
 
   /**
-   * Implements Drupal\Core\Cache\CacheBackendInterface::__construct().
+   * Constructs a MemoryBackend object.
+   *
+   * @param string $bin
+   *   The cache bin for which the object is created.
    */
   public function __construct($bin) {
   }
diff --git a/core/lib/Drupal/Core/Cache/NullBackend.php b/core/lib/Drupal/Core/Cache/NullBackend.php
index ee8b1d3..66a9938 100644
--- a/core/lib/Drupal/Core/Cache/NullBackend.php
+++ b/core/lib/Drupal/Core/Cache/NullBackend.php
@@ -21,7 +21,10 @@
 class NullBackend implements CacheBackendInterface {
 
   /**
-   * Implements Drupal\Core\Cache\CacheBackendInterface::__construct().
+   * Constructs a NullBackend object.
+   *
+   * @param string $bin
+   *   The cache bin for which the object is created.
    */
   public function __construct($bin) {}
 
diff --git a/core/lib/Drupal/Core/Entity/DatabaseStorageController.php b/core/lib/Drupal/Core/Entity/DatabaseStorageController.php
index 6342502..52c38ab 100644
--- a/core/lib/Drupal/Core/Entity/DatabaseStorageController.php
+++ b/core/lib/Drupal/Core/Entity/DatabaseStorageController.php
@@ -104,10 +104,12 @@
    */
   protected $cache;
 
+
   /**
-   * Implements Drupal\Core\Entity\EntityStorageControllerInterface::__construct().
+   * Constructs a new EntityStorageController object.
    *
-   * Sets basic variables.
+   * @param string $entityType
+   *   The entity type for which the instance is created.
    */
   public function __construct($entityType) {
     $this->entityType = $entityType;
diff --git a/core/lib/Drupal/Core/Entity/EntityFormController.php b/core/lib/Drupal/Core/Entity/EntityFormController.php
index c4ebe28..f75015f 100644
--- a/core/lib/Drupal/Core/Entity/EntityFormController.php
+++ b/core/lib/Drupal/Core/Entity/EntityFormController.php
@@ -23,7 +23,10 @@
   protected $operation;
 
   /**
-   * Implements Drupal\Core\Entity\EntityFormControllerInterface::__construct().
+   * Constructs an EntityFormController object.
+   *
+   * @param string $operation
+   *   The name of the current operation.
    */
   public function __construct($operation) {
     $this->operation = $operation;
diff --git a/core/lib/Drupal/Core/Entity/EntityFormControllerInterface.php b/core/lib/Drupal/Core/Entity/EntityFormControllerInterface.php
index 72c97f1..26a227d 100644
--- a/core/lib/Drupal/Core/Entity/EntityFormControllerInterface.php
+++ b/core/lib/Drupal/Core/Entity/EntityFormControllerInterface.php
@@ -13,14 +13,6 @@
 interface EntityFormControllerInterface {
 
   /**
-   * Constructs the object.
-   *
-   * @param string $operation
-   *   The name of the current operation.
-   */
-  public function __construct($operation);
-
-  /**
    * Builds an entity form.
    *
    * This is the entity form builder which is invoked via drupal_build_form()
diff --git a/core/lib/Drupal/Core/Entity/EntityStorageControllerInterface.php b/core/lib/Drupal/Core/Entity/EntityStorageControllerInterface.php
index 153cd80..2dcf682 100644
--- a/core/lib/Drupal/Core/Entity/EntityStorageControllerInterface.php
+++ b/core/lib/Drupal/Core/Entity/EntityStorageControllerInterface.php
@@ -21,14 +21,6 @@
 interface EntityStorageControllerInterface {
 
   /**
-   * Constructs a new Drupal\Core\Entity\EntityStorageControllerInterface object.
-   *
-   * @param $entityType
-   *   The entity type for which the instance is created.
-   */
-  public function __construct($entityType);
-
-  /**
    * Resets the internal, static entity cache.
    *
    * @param $ids
diff --git a/core/lib/Drupal/Core/Queue/Memory.php b/core/lib/Drupal/Core/Queue/Memory.php
index d741bda..2405407 100644
--- a/core/lib/Drupal/Core/Queue/Memory.php
+++ b/core/lib/Drupal/Core/Queue/Memory.php
@@ -32,7 +32,10 @@
   protected $idSequence;
 
   /**
-   * Implements Drupal\Core\Queue\QueueInterface::__construct().
+   * Creates a Memory object.
+   *
+   * @param string $name
+   *   An arbitrary string. The name of the queue to work with.
    */
   public function __construct($name) {
     $this->queue = array();
diff --git a/core/lib/Drupal/Core/Queue/QueueInterface.php b/core/lib/Drupal/Core/Queue/QueueInterface.php
index e3e9350..8e7e22c 100644
--- a/core/lib/Drupal/Core/Queue/QueueInterface.php
+++ b/core/lib/Drupal/Core/Queue/QueueInterface.php
@@ -14,13 +14,6 @@
  * in messages and to execute them at least once.
  */
 interface QueueInterface {
-  /**
-   * Initializes a new queue object.
-   *
-   * @param $name
-   *   An arbitrary string. The name of the queue to work with.
-   */
-  public function __construct($name);
 
   /**
    * Adds a queue item and store it directly to the queue.
diff --git a/core/lib/Drupal/Core/Queue/System.php b/core/lib/Drupal/Core/Queue/System.php
index 6deab47..4a99c71 100644
--- a/core/lib/Drupal/Core/Queue/System.php
+++ b/core/lib/Drupal/Core/Queue/System.php
@@ -19,7 +19,10 @@
   protected $name;
 
   /**
-   * Implements Drupal\Core\Queue\QueueInterface::__construct().
+   * Creates a System object.
+   *
+   * @param string $name
+   *   An arbitrary string. The name of the queue to work with.
    */
   public function __construct($name) {
     $this->name = $name;
diff --git a/core/lib/Drupal/Core/TypedData/Type/TypedData.php b/core/lib/Drupal/Core/TypedData/Type/TypedData.php
index 6afc860..d30ca8e 100644
--- a/core/lib/Drupal/Core/TypedData/Type/TypedData.php
+++ b/core/lib/Drupal/Core/TypedData/Type/TypedData.php
@@ -25,7 +25,12 @@
   protected $definition;
 
   /**
-   * Implements TypedDataInterface::__construct().
+   * Creates a typed data object given its definition.
+   *
+   * @param array $definition
+   *   The data definition.
+   *
+   * @see Drupal\Core\TypedData\TypedDataManager::create()
    */
   public function __construct(array $definition) {
     $this->definition = $definition;
diff --git a/core/lib/Drupal/Core/TypedData/TypedDataInterface.php b/core/lib/Drupal/Core/TypedData/TypedDataInterface.php
index 680b92e..1a8ffe7 100644
--- a/core/lib/Drupal/Core/TypedData/TypedDataInterface.php
+++ b/core/lib/Drupal/Core/TypedData/TypedDataInterface.php
@@ -15,16 +15,6 @@
 interface TypedDataInterface {
 
   /**
-   * Creates a typed data object given its definition.
-   *
-   * @param array $definition
-   *   The data definition.
-   *
-   * @see Drupal\Core\TypedData\TypedDataManager::create()
-   */
-  public function __construct(array $definition);
-
-  /**
    * Gets the data type.
    *
    * @return string