public String toFormattedString() {
        StringBuilder s = new StringBuilder();
        s.append("<" + name + ">" + " op:" + String.format("0x%08x", opcode) + " size:" + dataSize + " oid:" + operatorId + " data:" );
        if(dataSize>0 && data != null) {
            s.append(DatatypeConverter.printHexBinary(data));
        } else {
            s.append("null");
        }
        return s.toString();
    }