This class represents the namespace dictionary. This is definitively detailed in:.

The ISO PDF Specification, ISO 32000-2:2017 PDF 2.0; Table: 356, page 725.

This class is always an indirect object because AttributeObjectElement.EntryNS, NamespaceElement.EntryRoleMapNS and StructureElementElement.EntryNS require it to be so.

A namespace element defines a namespace used in a tagged PDF document structure tree. Namespaces allow structure element types from different specifications to coexist without name collisions.

The NS entry holds the namespace URI as a string. This URI uniquely identifies the namespace and distinguishes its element types from those of other namespaces, including the standard PDF namespace.

The Schema entry references an associated file carrying a schema definition for the namespace, describing the permitted element types, attributes, and relationships.

The RoleMapNS entry provides a mapping from element type names in this namespace to standard PDF structure type names, allowing readers that do not support the namespace to apply standard semantics.

System.Object
    WebSupergoo.ABCpdf14.Elements.Element
       WebSupergoo.ABCpdf14.Elements.NamespaceElement