code: private Iterator<Row<ByteBuffer, DeltaKey>> rowScan(final DeltaPlacement placement,
                                                          final ByteBufferRange rowRange,
                                                          final ByteBufferRange columnRange,
                                                          final LimitCounter limit,
                                                          final ReadConsistency consistency) {
          return rowScan(placement, placement.getBlockedDeltaColumnFamily(), rowRange, columnRange, limit, consistency);
      }
docs: Scans for rows within the specified range, exclusive on start and inclusive on end.