Protected some properties

Author: Geolim4

src/phpFastCache/Cache/DriverBaseTrait.php

@@ -24,25 +24,20 @@ trait DriverBaseTrait
 {
     use ExtendedCacheItemPoolTrait;
 
-    /**
-     * @var array
-     */
-    public $extension_dir = '_extensions';
-
     /**
      * @var array default options, this will be merge to Driver's Options
      */
-    public $config = [];
+    protected $config = [];
 
     /**
      * @var bool
      */
-    public $fallback = false;
+    protected $fallback = false;
 
     /**
      * @var mixed Instance of driver service
      */
-    public $instance;
+    protected $instance;
 
     /**
      * @param $keyword
@@ -69,6 +64,13 @@ public function setup($config_name, $value = '')
         }
     }
 
+    /**
+     * @return array
+     */
+    public function getConfig()
+    {
+        return $this->config;
+    }
 
     /**
      * @param $file