Future<Null> setData(ClipboardData data)

Stores the given clipboard data on the clipboard.

Source 

static Future<Null> setData(ClipboardData data) async {
  await PlatformMessages.invokeMethod(
     _kChannelName,
    'Clipboard.setData',
    <Map<String, dynamic>>[<String, dynamic>{
      'text': data.text,
    }],
  );
}