Creates a Dest for the named destination link_name in
this.
Note that named destinations are bytestrings, not string. That means that unless link_name was returned by a poppler
function (e.g. is named_dest), it needs to be converted to string using
named_dest_from_bytestring before being passed to this function.
The returned value must be freed with free.
| this |
A Document |
| link_name |
a named destination |
|
a new Dest destination, or |