1. DomName('CharacterData.replaceData')
  2. DocsEditable()
void replaceData(int offset, int length, String data)

Source 

@DomName('CharacterData.replaceData')
@DocsEditable()
void replaceData(int offset, int length, String data) => _blink.BlinkCharacterData.instance.replaceData_Callback_3_(unwrap_jso(this), offset, length, data);