* 
     * @param flag
     */
    public final void addFlags ( int flag ) {
        this.flags |= flag;
    }


    /**
     * 
     * @param flag
     */
    public final void clearFlags ( int flag ) {
        this.flags &= ~flag;
    }


    /**
     * @return the mid
     */
    @Override
    public final long getMid () {
        return this.mid;
    }