||DictIterator is used to traverse key/value pairs in a dictionary.
||The Class Doc.
||A NameTree is a common data structure in PDF.
||NameTreeIterator is used to traverse key/value pairs in a NameTree.
||A NumberTree is a common data structure in PDF.
||NumberTreeIterator is used to traverse key/value pairs in a NumberTree.
||Obj is a concrete class for all SDF/Cos objects.
||ObjSet is a lightweight container that can hold a collection of SDF objects.
||SDFDoc is a low-level document representing a graph of SDF.Obj nodes that
can be used to build higher-level document models such as PDF (Portable Document
Format) or FDF (Forms Document Format).
||Standard Security Handler is a built-in password-based security handler.
||A base class for SignatureHandler.