docs: private void sendOpsResponse(VoltTable[] results, JSONObject obj, byte payloadType) throws Exception
      {
          long requestId = obj.getLong("requestId");
          long returnAddress = obj.getLong("returnAddress");
          // Send a response with no data since the stats is not supported or not yet available
          if (results == null) {
              ByteBuffer responseBuffer = ByteBuffer.allocate(8);
              responseBuffer.putLong(requestId);
              byte responseBytes[] = CompressionService.compressBytes(responseBuffer.array());
              BinaryPayloadMessage bpm = new BinaryPayloadMessage( new byte[] {payloadType}, responseBytes);
              m_mailbox.send(returnAddress, bpm);
              return;
          }
  
          ByteBuffer[] bufs = new ByteBuffer[results.length];
          int statbytes = 0;
          for (int i = 0; i < results.length; i++) {
              bufs[i] = results[i].getBuffer();
              bufs[i].position(0);
              statbytes += bufs[i].remaining();
          }
  
          ByteBuffer responseBuffer = ByteBuffer.allocate(
                  8 + // requestId
                  4 * results.length + // length prefix for each stats table
                  + statbytes);
          responseBuffer.putLong(requestId);
          for (ByteBuffer buf : bufs) {
              responseBuffer.putInt(buf.remaining());
              responseBuffer.put(buf);
          }
          byte responseBytes[] = CompressionService.compressBytes(responseBuffer.array());
  
          BinaryPayloadMessage bpm = new BinaryPayloadMessage( new byte[] {payloadType}, responseBytes);
          m_mailbox.send(returnAddress, bpm);
      }