code: static List<ByteBuffer> convertByteKeys(Collection<byte[]> rowKeys) {
          List<ByteBuffer> rowKeyList = new ArrayList<ByteBuffer>();
          for (byte[] rowKey : rowKeys) {
              rowKeyList.add(ByteBuffer.wrap(rowKey));
          }
          return rowKeyList;
      }
docs: Convert the given row keys from byte[]s to a list of ByteBuffers.
  
  @param rowKeys   Collection of row keys as byte[]s.
  @return          List of BufferBuffer that wrap the given byte[]s.