Tut,
I’m not sure @shoki_shakya 's requirement was for access to the code base even though he mentioned it. He said:
what we need is support for application bugs and features
And I think he would rather not have to fix the code or add features himself if he can get somebody else to do it. He wants some features even if he has to implement himself.
He might be interested in accessing Manager through Manager’s API which is alluded to here:
Generate backup using API - ideas - Manager Forum
and in many other threads.