CFS_IO_LIB Transfer Frame Version Support

[dannyjromero]

I've been attempting to make use of the CFS_IO_LIB library to build downlink frames. It's working fine, but I've noticed there seems to be only one format that this library is capable of producing.

According to the AOS Architectural Spec, the format of the Transfer Frame header can take one of two different versions:

As it says, version 2 is laid out in that same document, and version 1 I believe can be best followed to the TM Space Data Link Protocol, specifically section 4:

I don't see any noted documentation in the CFS_IO_LIB detailing which version it's supposed to produce, or if you can choose between either one - I'm looking here. From looking at the code itself, though, it really seems like it's only capable of producing version 1. If I wanted to produce version 2, is that possible? Has anyone else done this? Is there some reason why it would produce this particular version - is version 2 super old and deprecated or something?