textSpan property
      
      TextSpan
      get
      textSpan
      
    
    
    
Implementation
TextSpan get textSpan {
  String clippedText = _getClippedText(_trimmedData);
  // FIXME(yuanyan): do not create text span every time.
  return CSSTextMixin.createTextSpan(clippedText, renderStyle);
}