Source
TextTrack addTextTrack(String kind, [String label, String language]) {
if (language != null) {
return wrap_jso(_blink.BlinkHTMLMediaElement.instance.addTextTrack_Callback_3_(unwrap_jso(this), kind, label, language));
}
if (label != null) {
return wrap_jso(_blink.BlinkHTMLMediaElement.instance.addTextTrack_Callback_2_(unwrap_jso(this), kind, label));
}
return wrap_jso(_blink.BlinkHTMLMediaElement.instance.addTextTrack_Callback_1_(unwrap_jso(this), kind));
}