dispose method
Implementation
@override
void dispose() {
_negotiator?.cleanup();
_negotiator = null;
_stopMediaDevice();
_localStream = null;
_remoteStream = null;
// TODO: set stream to null when done.
// if (this.options && this.options._stream) {
// this.options._stream = null;
// }
if (!open) {
return;
}
open = false;
}