It truly is tough for me to guess your intention. On one hand you're saying that both of those a and b are public (no leading underscore within their names) so I should theoretically be permitted to accessibility/mutate (get/established) both of those. But Then you certainly specify an specific mutator https://smartworldeveloper.in/smart-world-69-gurgaon-redefining-urban-luxury-living-in-sector-69/