[alibaba/easyexcel]@ExcelProperty相同的表头无法自动合并

参考官方文档，实现复杂表头下载，相同的表头没有自动合并。

   public void complexHeadWrite(HttpServletResponse response) {
        String fileName = TestFileUtil.getPath() + "complexHeadWrite" + System.currentTimeMillis() + ".xlsx";
        // 这里 需要指定写用哪个class去写，然后写到第一个sheet，名字为模板 然后文件流会自动关闭
        File file = new File("C:\\Users\\**1\\Desktop\\多sheet导出测试.xlsx");
        EasyExcel.write(file, ComplexHeadData.class).sheet("模板").doWrite(data1());

    }

        @Getter
        @Setter
        @EqualsAndHashCode
        public class ComplexHeadData {
            @ExcelProperty({"主标题", "字符串标题"})
            private String string;
            @ExcelProperty({"主标题", "日期标题"})
            private Date date;
            @ExcelProperty({"主标题", "数字标题"})
            private Double doubleData;
        }

     private List<DownloadData> data1() {
        List<DownloadData> list = ListUtils.newArrayList();
        for (int i = 0; i < 10; i++) {
            DownloadData data = new DownloadData();
            data.setString("字符串" + i);
            data.setDate(new Date());
            data.setDoubleData(0.56);
            list.add(data);
        }
        return list;
    }