[Cache] add constructor docblocks for clarity

src/Symfony/Component/Cache/Simple/AbstractCache.php

@@ -30,6 +30,10 @@ abstract class AbstractCache implements CacheInterface, LoggerAwareInterface
 
     private $defaultLifetime;
 
+    /**
+     * @param string $namespace
+     * @param int    $defaultLifetime
+     */
     protected function __construct($namespace = '', $defaultLifetime = 0)
     {
         $this->defaultLifetime = max(0, (int) $defaultLifetime);

src/Symfony/Component/Cache/Simple/ApcuCache.php

@@ -17,6 +17,11 @@ class ApcuCache extends AbstractCache
 {
     use ApcuTrait;
 
+    /**
+     * @param string      $namespace
+     * @param int         $defaultLifetime
+     * @param string|null $version
+     */
     public function __construct($namespace = '', $defaultLifetime = 0, $version = null)
     {
         $this->init($namespace, $defaultLifetime, $version);

src/Symfony/Component/Cache/Simple/DoctrineCache.php

@@ -18,6 +18,11 @@ class DoctrineCache extends AbstractCache
 {
     use DoctrineTrait;
 
+    /**
+     * @param CacheProvider $provider
+     * @param string        $namespace
+     * @param int           $defaultLifetime
+     */
     public function __construct(CacheProvider $provider, $namespace = '', $defaultLifetime = 0)
     {
         parent::__construct('', $defaultLifetime);

src/Symfony/Component/Cache/Simple/FilesystemCache.php

@@ -17,6 +17,11 @@ class FilesystemCache extends AbstractCache
 {
     use FilesystemTrait;
 
+    /**
+     * @param string      $namespace
+     * @param int         $defaultLifetime
+     * @param string|null $directory
+     */
     public function __construct($namespace = '', $defaultLifetime = 0, $directory = null)
     {
         parent::__construct('', $defaultLifetime);

src/Symfony/Component/Cache/Simple/MemcachedCache.php

@@ -19,6 +19,11 @@ class MemcachedCache extends AbstractCache
 
     protected $maxIdLength = 250;
 
+    /**
+     * @param \Memcached $client
+     * @param string     $namespace
+     * @param int        $defaultLifetime
+     */
     public function __construct(\Memcached $client, $namespace = '', $defaultLifetime = 0)
     {
         $this->init($client, $namespace, $defaultLifetime);

src/Symfony/Component/Cache/Simple/PhpFilesCache.php

@@ -18,6 +18,13 @@ class PhpFilesCache extends AbstractCache
 {
     use PhpFilesTrait;
 
+    /**
+     * @param string      $namespace
+     * @param int         $defaultLifetime
+     * @param string|null $directory
+     *
+     * @throws CacheException if OPcache is not enabled
+     */
     public function __construct($namespace = '', $defaultLifetime = 0, $directory = null)
     {
         if (!static::isSupported()) {

src/Symfony/Component/Cache/Simple/RedisCache.php

@@ -19,6 +19,8 @@ class RedisCache extends AbstractCache
 
     /**
      * @param \Redis|\RedisArray|\RedisCluster|\Predis\Client $redisClient
+     * @param string                                          $namespace
+     * @param int                                             $defaultLifetime
      */
     public function __construct($redisClient, $namespace = '', $defaultLifetime = 0)
     {