protected WorkbookConversionStrategy getWorkbookConversionStrategy() {
List<ConversionStrategy<Cell>> cellPartConverters = new LinkedList<ConversionStrategy<Cell>>();
cellPartConverters.add(new MergedCellConversionStrategy());
cellPartConverters.add(new DefaultStyleConverter());
cellPartConverters.add(new DefaultCommentConverter());
ConversionStrategy<Cell> cellBodyStrategy = new TableCellConversionStrategy(cellPartConverters, "td");
ConversionStrategy<Cell> cellHeaderStrategy = new TableCellConversionStrategy(cellPartConverters, "th");
ConversionStrategy<Cell> paragraphCellStrategy = new BasicCellConversionStrategy(cellPartConverters, "span", false);