This is tangential to your submission, but PDF is the file format I use for exercising any library that claims to be a declarative file format (ala https://gith

This is tangential to your submission, but PDF is the file format I use for exercising any library that claims to be a declarative file format (ala https://github.com/kaitai-io/kaitai_struct_formats#readme https://github.com/kaitai-io/kaitai_struct_formats#readme )