node module to help writing SIP functional/integration tests

node module to help writing SIP functional/integration tests

Over the years I have been slowly writing a node module to help me
write SIP functional/integration tests:
I have been adding new features as I needed for new kinds of test but didn't have time to document it.
But now I need to mentor some newcomers to the company I work for 
and had to do it. 
I asked gemini to do it for me and got:

It might be of help for other people so I am sharing it.