An SDK should follow SOLID principles and hence be easy to extend. You can archive this by redisigning the sdk in a way that allows on to extend features for example using set injection so that I can choose my own of doing stuff like the client to sent the request with. There are no guidelines on how to contribute on your github page so if possible can we have this information.
Design changes on java sdk
iammerus
#2
Hi @bmukorera, The guidelines are currently in the works. You keep an eye on the progress here: Contributing to the SDKs.