Represents the "ToUnicode" entry of the type 0 font dictionary object.

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

It contains a StreamElement.

For definitive details see:.

The ISO PDF Specification, ISO 32000-1:2008 PDF 1.7; Table: 121, page 280.

The ISO PDF Specification, ISO 32000-2:2017 PDF 2.0; Table: 119, page 338.