Setting and getting config class objects

Hi dhaval,

I sincerely appreciate for your time and efforts for the answer.
Thank you for the reply.

Yes ,you said it right.It depends on the requirements and respective organisations guidelines.
But i am not yet clear with the usage of interface in config class.

If possible ,please suggest me some resource or any example w.r.t. usage of interface in config class.

Regards,
Shubham