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

The ISO PDF Specification, ISO 32000-2:2017 PDF 2.0; Table: 342, page 706.

Adobe Supplement to the ISO 32000, BaseVersion: 1.7, ExtensionLevel: 3; Table: 9.51a, page 88.

This class is always an indirect object because RichMediaActivationElement.EntryConfiguration and RichMediaContentElement.EntryConfigurations require it to be so.

System.Object
    WebSupergoo.ABCpdf14.Elements.Element
       WebSupergoo.ABCpdf14.Elements.RichMediaConfigElement

A rich media configuration dictionary combines a set of rich media instances into a named playable configuration. The Subtype entry classifies the configuration type. The Instances array lists the rich media instance dictionaries included.