There are a lot of
iText5 does not expose the additional data in
PdfStamper#MoreInfo. It is however possible to retrieve the metadata containing using
PdfReader#XmpMetaData and to set it using
the metadata is returned and set as a
byte, so you'll have to handle the translation/generation from and to yourself.
In iText7, the process is mostly the same, but handled through the
PdfDocument class instead (since it is a wrapper for a