Represents the "ICCVersion" entry of the destoutputprofileref dictionary object.

It is defined as part of the PDF 1.0 specification.

It contains a string representing a PDF string object.

For definitive details see:.

The ISO PDF Specification, ISO 32000-2:2017 PDF 2.0; Table: 402, page 817.

The ICCVersion entry records the version of the ICC specification to which the embedded profile conforms, as a string in major.minor format. This helps processors determine compatibility.