private List<PartitionBound> buildPartitionUnitsFrom(ScrollableResults scroll, Class<?> clazz) {
		List<PartitionBound> partitionUnits = new ArrayList<>();
		int rowsPerPartition = SerializationUtil.parseIntegerParameter( ROWS_PER_PARTITION, serializedRowsPerPartition );
		Object lowerID = null;
		Object upperID = null;
		while ( scroll.scroll( rowsPerPartition ) ) {
			lowerID = upperID;
			upperID = scroll.get( 0 );
			partitionUnits.add( new PartitionBound( clazz, lowerID, upperID ) );
		}
		// add an additional partition on the tail
		lowerID = upperID;
		upperID = null;
		partitionUnits.add( new PartitionBound( clazz, lowerID, upperID ) );
		return partitionUnits;
	}