think\Response::data PHP Method

    public function data($data)
    {
        $this->data = $data;
        return $this;
    }

 /**
  * @covers think\Response::data
  * @todo Implement testData().
  */
 public function testData()
 {
     $data = "data";
     Response::data($data);
     Response::data(null);
 }