How to change rdf:about

[TowelRoll]

Describe the bug

I want to edia rdf:about, how can i do ?

To Reproduce

Expected behavior

Desktop (please complete the following information):

• OS and version:Linux
• Exiv2 version and source: (e.g., 0.27.5 from exiv2.org)
• Compiler and version: (e.g., Gcc 12.2, Clang 14.0.0, MSVC 2022)
• Compilation mode and/or compiler flags: (e.g., debug, -O3)

Additional context

Add any other information about the problem here.