addInt(0xFFFF); return;
if(b == null) { addInt(0xFFFF); return; }  addInt(b.length()); _buffer.put(b); _buffer.put((byte) 0);
    private void addBuffer(Buffer b)    {        if (b==null)        {            addInt(0xFFFF);            return;        }        addInt(b.length());        _buffer.put(b);        _buffer.put((byte)0);    }