This class represents the collection item dictionary. This is definitively detailed in:.

The ISO PDF Specification, ISO 32000-1:2008 PDF 1.7; Table: 48, page 106.

The ISO PDF Specification, ISO 32000-2:2017 PDF 2.0; Table: 46, page 138.

This class is always an indirect object because FullFileSpecificationElement.EntryCI requires it to be so.

System.Object
    WebSupergoo.ABCpdf13.Elements.Element
       WebSupergoo.ABCpdf13.Elements.CollectionItemElement