It Can be tough for me to guess your intention. On 1 hand you happen to be saying that equally a and b are general public (no leading underscore within their names) so I should really theoretically be permitted to access/mutate (get/set) each. But then you specify an explicit mutator https://emperiumgurugram.in/emperium-premio-sector-37c-gurgaon-urban-elegance-with-seamless-connectivity/