I am currently working with the syncfusion_flutter_pdf package to create a PDF document in Flutter. I can draw a simple rectangle using page.graphics.drawRectangle, but I want the rectangle to have rounded corners.

Here is my current code for drawing a regular rectangle:

Here is my current script

createBoxRounded(PdfPage page) {
final Size pageSize =
Size(page.getClientSize().width, page.getClientSize().height);

//draw box 300x300 and rounded 20 // background white
PdfRectangleAnnotation(const Rect.fromLTWH(0, 0, 150, 150), 'Rectangle',
    color: PdfColor(255, 0, 0), setAppearance: true);
page.graphics.drawRectangle(
  bounds: Rect.fromCenter(
      center: Offset(pageSize.width / 2, pageSize.height / 2.5),
      width: 300,
      height: 300),
  pen: PdfPen(
    PdfColor(232, 233, 235),
    width: 5,
    dashStyle: PdfDashStyle.custom,
  ),
  brush: PdfSolidBrush(
    PdfColor(255, 255, 255),
  ),
);
return page;

}

How can I modify this code to make the rectangle’s corners rounded?