如何在java中使用aspose pdf设置表格单元格中的垂直文本样式

com.aspose.pdf.Document document = new com.aspose.pdf.Document();
com.aspose.pdf.Page page = document.getPages().add();

com.aspose.pdf.Table table = new com.aspose.pdf.Table();
table.setColumnWidths("100");
table.getRows().add();
table.getRows().add();

com.aspose.pdf.Cell cell = new com.aspose.pdf.Cell();
cell.getParagraphs().add(new com.aspose.pdf.TextFragment("Vertical Text"));

com.aspose.pdf.TextState textState = cell.getTextState();
textState.setRotation(90);

table.getRows().get_Item(0).getCells().add(cell);
page.getParagraphs().add(table);

document.save("output.pdf");