如何在Apache POI中将图表区的填充属性设置为“无填充”？

import org.apache.poi.ss.usermodel.*;
import org.apache.poi.xddf.usermodel.chart.*;
import org.apache.poi.xssf.usermodel.*;

public class NoFillChartExample {
    public static void main(String[] args) throws Exception {
        // 创建一个新的工作簿
        XSSFWorkbook workbook = new XSSFWorkbook();

        // 创建一个工作表
        XSSFSheet sheet = workbook.createSheet("Chart Sheet");

        // 在此处添加您的数据...

        // 创建一个图表
        XSSFDrawing drawing = sheet.createDrawingPatriarch();
        XSSFClientAnchor anchor = drawing.createAnchor(0, 0, 0, 0, 0, 0, 10, 20);
        XSSFChart chart = drawing.createChart(anchor);

        // 设置图表区格式为无填充
        XDDFChartArea chartArea = chart.getOrAddChartArea();
        XDDFChartAreaFormat chartAreaFormat = chartArea.getOrAddChartAreaFormat();
        chartAreaFormat.setFill(Fill.NONE);

        // 在此处配置您的图表...

        // 保存工作簿到文件
        try (FileOutputStream fileOut = new FileOutputStream("NoFillChart.xlsx")) {
            workbook.write(fileOut);
        }

        // 关闭工作簿
        workbook.close();
    }
}

<dependency>
  <groupId>org.apache.org</groupId>
  @dependency>
    <groupId>org.apache.poi</groupId>
    <artifactId>poi-ooxml</artifactId>
    <version>5.2.0</version>
  </dependency>
</dependency>

implementation 'org.apache.poi:poi-ooxml:5.2.0'