Whether to include all images in the analysis to allow the
detection of orphans.
By default the ImageOperation will go through the pages defined
in the PageContents looking at all
the images that are used. However it is possible to include an
image in a document yet never use it. This kind of orphan will not
be detected using this method.
To allow the detection of orphans this property can be used to
search the entire document and reference any image that exists. If
such an image is an orphan this will be revealed because it will
appear in the analysis as an ImageProperties item with