public function getJson()
    {
      return json_encode(
        array(
          'name' => $this->name,
          'mime' => $this->mime,
          'height' => $this->height,
          'width' => $this->width,
          'size' => $this->_files['size'],
          'location' => $this->location,
          'fullpath' => $this->fullPath,
        )
      );
    }