clone method
Implementation
@override
InitialOutgoingInviteRequest clone() {
InitialOutgoingInviteRequest request =
InitialOutgoingInviteRequest(ruri, ua);
headers.forEach((String? name, dynamic value) {
request.headers[name] = List<dynamic>.from(headers[name]);
});
request.body = body;
request.extraHeaders = utils.cloneArray(extraHeaders);
request.to = to;
request.from = from;
request.call_id = call_id;
request.cseq = cseq;
request.transaction = transaction;
return request;
}