Indicates whether the image provided to the widget should be represented as a reference or should be embedded.The data property affects the object behavior when the form is filled.Reference_Syntax.data = “link | embed”
• The image is represented as a URI reference. If the user provides the widget with a URI, the href attribute of the container’s image object is updated to reflect the new URI. If the image object was previously loaded with an embedded image, that image is removed from the object.
• The image is embedded in the container’s image object. If the user provides the widget with a URI, the image referenced by the URI is embedded as the content of the image object.