/**
  *
  * Get instance
  *
  * @return Kernel_Config Instance
  *
  */
 public static function getInstance()
 {
     if (!isset(self::$instance)) {
         self::$instance = new Kernel_Config();
     }
     return self::$instance;
 }
 public function testSingleton()
 {
     $this->assertSame(Kernel_Config::getInstance(), Kernel_Config::getInstance());
 }