code: private Iterator<RecordEntryRawMetadata> rawMetadataFromCql(final Iterator<StitchedRow> iter) {
          return Iterators.transform(iter, row -> new RecordEntryRawMetadata()
                  .withTimestamp(TimeUUIDs.getTimeMillis(getChangeId(row)))
                  .withSize(_daoUtils.skipPrefix(getValue(row)).remaining()));
      }
docs: Converts the rows from the provided iterator into raw metadata.