docs: public static int numChunksForMessage(NDArrayMessage message, int chunkSize) {
          int sizeOfMessage = NDArrayMessage.byteBufferSizeForMessage(message);
          int numMessages = sizeOfMessage / chunkSize;
          //increase by 1 for padding
          if (numMessages * chunkSize < sizeOfMessage)
              numMessages++;
          return numMessages;
      }