TestData::data PHP Method

    public function data($a)
    {
        return $a;
    }

 /**
  * Run test method
  */
 public function run()
 {
     try {
         $method = $this->_validateMethodName();
         /**
          * Example
          *
          * $this->_api->product()->apiList()
          * $this->_api->order()->apiAdd()
          */
         $result = call_user_func(array(call_user_func(array($this->_api, $method['section'])), $method['method']), TestData::data($method));
         //View result
         var_dump($result);
     } catch (Exception $e) {
         echo "#" . $e->getCode() . " " . $e->getMessage() . "\n";
     }
 }