question: @ Override public int fillChunkData ( byte [ ] data , int offset , int rowId , KeyStructureInfo restructuringInfo ) { byte [ ] maskedKey = getMaskedKey ( dataChunk , rowId * chunkAttributes . getColumnValueSize ( ) , restructuringInfo ) ; System . arraycopy ( maskedKey , 0 , data , offset , maskedKey . length ) ; return maskedKey . length ; }
target:  Below method will be used to fill the data based on offset and row id