Why Doesn't SAS® Risk and Finance Workbench have official REST API docs?

[dmay404040]

I want to automate a process that reads and writes data to cells  in SAS® Risk and Finance Workbench worksheets. But I don't want to use lua. 

I found an api for a lua library

https://support.sas.com/documentation/solutions/stresstest/3.2/rfw32_hf1_api.html#top

and it seems like it uses an underlying REST API. 

there's even a /rest url path that seems to list all of the different api functions for SASRFW

Why doesn't SASRFW's REST api have official docs?