code: @Override
      public String[] read(ScanBuffer buffer) {
          int length = getLength(buffer);
          if (length<0) return null;
          String[] result = new String[length];
          for (int i = 0; i < length; i++) {
              result[i]=stringSerializer.read(buffer);
          }
          return result;
      }
docs: ############### Serialization ###################