Represents the "IncludedImageQuality" entry of the version 2.0 opi dictionary object.

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

It contains an integer representing a PDF numeric object.

It should have a minimum value of 1 and a maximum of 3.

For definitive details see:.

The ISO PDF Specification, ISO 32000-1:2008 PDF 1.7; Table: 370, page 642.

The ISO PDF Specification, ISO 32000-2:2017 PDF 2.0; Table: 407, page 827.