code: protected byte[][] toByteArrays(final byte[] keyspace, final byte[] uid, final byte[] serviceCode, final byte[] key,
                                    final long expireMillis, final byte[][] values) {
          final byte[][] allArgs = new byte[values.length * 2 + 4][];
  
          int index = 0;
          allArgs[index++] = keyspace;
          allArgs[index++] = uid;
          allArgs[index++] = serviceCode;
          allArgs[index++] = key;
          byte[] expireTime = RedisProtocol.toByteArray(expireMillis);
  
          for (int i = 0; i < values.length; i++) {
              allArgs[index++] = values[i];
              allArgs[index++] = expireTime;
          }
  
          return allArgs;
      }
docs: To byte arrays.
  
  @param keyspace     the keyspace
  @param uid          the uid
  @param serviceCode  the service code
  @param key          the key
  @param expireMillis the expire millis
  @param values       the values
  @return the byte[][]