String row, String column, String valueToCheck, String valueToPut)
throws IOException, JAXBException {
RowModel rowModel = new RowModel(row);
rowModel.addCell(new CellModel(Bytes.toBytes(column),
Bytes.toBytes(valueToPut)));
rowModel.addCell(new CellModel(Bytes.toBytes(column),
Bytes.toBytes(valueToCheck)));
CellSetModel cellSetModel = new CellSetModel();
cellSetModel.addRow(rowModel);
StringWriter writer = new StringWriter();
marshaller.marshal(cellSetModel, writer);