Returns the associated files listed in the AF entry of owner.
public IReadOnlyList<PdfFileSpecification> ReadAssociatedFiles(CosDictionary owner, CosReference? ownerReference = null)
Any dictionary or stream dictionary of this document: a structure element, an annotation, a form field.
The owner's indirect reference, for diagnostics.
ISO 32000-2 §14.13.2 (PDF 2.0): AF is an array of file specification dictionaries. A single dictionary is read as an
array of one and a file specification string is accepted, both with an AssociatedFilesInvalid diagnostic. An embedded
associated file without Subtype, or with Params but no ModDate, is reported. A missing
AFRelationship means Unspecified and is not reported.