Represents the "Configs" entry of the optional content properties dictionary object.

It is an optional entry defined as part of the PDF 1.0 specification.

It contains an array which contains OptionalContentConfigElements.

For definitive details see:.

The ISO PDF Specification, ISO 32000-1:2008 PDF 1.7; Table: 100, page 229.

The ISO PDF Specification, ISO 32000-2:2017 PDF 2.0; Table: 98, page 281.