Add missing docstrings and mark some methods private on sse ns.
Add missing docstrings and mark some methods private on sse ns.

coopsource/catacumba,funcool/catacumba,funcool/catacumba,coopsource/catacumba,mitchelkuijpers/catacumba,mitchelkuijpers/catacumba,funcool/catacumba,prepor/catacumba,prepor/catacumba