This class represents the web capture image set. This is definitively detailed in:.

The ISO PDF Specification, ISO 32000-1:2008 PDF 1.7; Table: 354, page 622.

The ISO PDF Specification, ISO 32000-2:2017 PDF 2.0; Table: 390, page 802.

A web capture image set dictionary is a specialisation of the web capture content set for images captured from the web.

The R entry holds an array of reference dictionaries, each mapping a URL to the image XObject captured from it. This preserves the association between each image and its original web address.

System.Object
    WebSupergoo.ABCpdf14.Elements.Element
       WebSupergoo.ABCpdf14.Elements.WebCaptureContentSetElement
          WebSupergoo.ABCpdf14.Elements.WebCaptureImageSetElement