pub(crate) trait TextTrackMethods<D: DomTypes> {
// Required methods
fn Kind(&self) -> TextTrackKind;
fn Label(&self) -> DOMString;
fn Language(&self) -> DOMString;
fn Id(&self) -> DOMString;
fn Mode(&self) -> TextTrackMode;
fn SetMode(&self, value: TextTrackMode);
fn GetCues(&self) -> Option<DomRoot<D::TextTrackCueList>>;
fn GetActiveCues(&self) -> Option<DomRoot<D::TextTrackCueList>>;
fn AddCue(&self, cue: &D::TextTrackCue) -> Fallible<()>;
fn RemoveCue(&self, cue: &D::TextTrackCue) -> Fallible<()>;
fn GetOncuechange(&self) -> Option<Rc<EventHandlerNonNull<D>>>;
fn SetOncuechange(&self, value: Option<Rc<EventHandlerNonNull<D>>>);
}