code: @Override
      public byte[] getBytes(int index) {
          String b64String = rows.get(row).getString(index);
          return Base64.getDecoder().decode(b64String);
      }
docs: Vert.x turns byte[] into a B64 encoded string. Reverse it.
  
  @see io.apiman.gateway.engine.components.jdbc.IJdbcResultSet#getBytes(int)