Retrieving clustering columns values from cell names

[Jacques-Henri Berthemet]

Hi Cassandra developers,

I'm implementing a custom PerRowSecondaryIndex and I managed to extract all 
data I need but clustering columns values from cell names. I know that they are 
part of the cell name itself and it's easy to extract the CQL column name:

    public static String cellNameToString(CFMetaData metadata, Cell cell) 
throws CharacterCodingException {
        if (metadata.isCQL3Table()) {
            return 
ByteBufferUtil.string(cell.name().cql3ColumnName(metadata).bytes);

But I don't understand how to extract the clustering column values from cell's 
name. Could someone share some info about that?

Thank you,
--
Jacques-Henri Berthemet