Represents the "Producer" entry of the document information dictionary object.

It is an optional entry defined as part of the PDF 1.0 specification. It was deprecated in PDF 2.0.

It contains a string representing a PDF string object.

For definitive details see:.

The ISO PDF Specification, ISO 32000-1:2008 PDF 1.7; Table: 317, page 550.

The ISO PDF Specification, ISO 32000-2:2017 PDF 2.0; Table: 349, page 712.

The Producer entry identifies the application that converted or exported the content to PDF. This may differ from Creator when a separate PDF generation tool was used. In PDF 2.0, preferably recorded in XMP metadata.