Add image as an annotation

[aric-katz]

Hi is there a code sample on how to add an image object as an annotation to an existing PDF page?
similar to adding text as an annotation done by:
const textAnnot = pdfDoc.context.obj({
Type: 'Annot',
Subtype: 'FreeText',
Name: new PDFString('correct'),
Contents: new PDFString(text),
Rect: [x-25, y+30, x+5, y+10],
DA: new PDFString(/${customFont.name}18 Tf 1 0 0 rg),
Opacity: 1,
});