code: public DeliverSmResp deliverSmResp(byte[] b) {
          DeliverSmResp resp = new DeliverSmResp();
          SequentialBytesReader reader = new SequentialBytesReader(b);
          assignHeader(resp, reader);
          // ignore the message_id, because it unused.
          return resp;
      }
docs: /*
  (non-Javadoc)
  
  @see org.jsmpp.util.PDUDecomposer#deliverSmResp(byte[])