Returns the image XObject the page's resources name resourceName, as the Do operator paints it.
public PdfImage? GetImage(string resourceName)
The key in the XObject subdictionary of the page's (possibly inherited) resource dictionary, without the slash.
null when the resources have no XObject of that name or it is not an image.ISO 32000-2 §7.8.3, Table 34 (XObject), §8.8 and §8.9.5.