protected DialogImpl(SIPTransaction transaction) { this(); this.sipStack = transaction.parentStack; this.addTransaction(transaction);
private DialogImpl() { this.routeList = new RouteList(); this.dialogState =  -1; localSequenceNumber = 0; remoteSequenceNumber = -1;
    protected DialogImpl(SIPTransaction transaction) {        this();	this.sipStack = transaction.parentStack;        this.addTransaction(transaction);    }