code: public CQLSSTableWriter rawAddRow(List<ByteBuffer> values)
      throws InvalidRequestException, IOException
      {
          if (values.size() != boundNames.size())
              throw new InvalidRequestException(String.format("Invalid number of arguments, expecting %d values but got %d", boundNames.size(), values.size()));
  
          QueryOptions options = QueryOptions.forInternalCalls(null, values);
          List<ByteBuffer> keys = insert.buildPartitionKeyNames(options);
          Composite clusteringPrefix = insert.createClusteringPrefix(options);
  
          long now = System.currentTimeMillis() * 1000;
          UpdateParameters params = new UpdateParameters(insert.cfm,
                                                         options,
                                                         insert.getTimestamp(now, options),
                                                         insert.getTimeToLive(options),
                                                         Collections.<ByteBuffer, CQL3Row>emptyMap());
  
          try
          {
              for (ByteBuffer key : keys)
              {
                  if (writer.shouldStartNewRow() || !key.equals(writer.currentKey().getKey()))
                      writer.newRow(key);
                  insert.addUpdateForKey(writer.currentColumnFamily(), key, clusteringPrefix, params, false);
              }
              return this;
          }
          catch (BufferedWriter.SyncException e)
          {
              // If we use a BufferedWriter and had a problem writing to disk, the IOException has been
              // wrapped in a SyncException (see BufferedWriter below). We want to extract that IOE.
              throw (IOException)e.getCause();
          }
      }
docs: Adds a new row to the writer given already serialized values.
  <p>
  This is a shortcut for {@code rawAddRow(Arrays.asList(values))}.
  
  @param values the row values (corresponding to the bind variables of the
  insertion statement used when creating by this writer) as binary.
  @return this writer.