Use this method to retrieve the locations of tagged visible
To use this method, you need to enable the tagging
functionality. See the AddTags property for details.
This method takes an ID obtained from a call to Doc.AddImageUrl, Doc.AddImageHtml or
and returns the locations of any items which are visible on the PDF
page as a result of that call.
The locations match up directly on a one-to-one basis with the
IDs returned by the GetTagIDs