get_picture();
set_picture(value);
Object.defineProperty('picture');
If you set an empty AnnPicture, this AnnFreehandHotspotObject will use the picture defined in DefaultPicture property.
If this property has a valid image, the AnnFreehandHotspotObject will use the image to fill its area.
If this property does not have a valid image, the AnnFreehandHotspotObject will use DefaultPicture to determine the image to fill its area.
For more information, refer to Using Pictures in Annotation Objects.