Man pages matching name detect_obj_free in section 3:

detect_obj_free.3.en	debian 10 / libchardet-dev
detect_obj_free.3.ko	debian 10 / libchardet-dev
detect_obj_free.3.en	debian 11 / libchardet-dev
detect_obj_free.3.ko	debian 11 / libchardet-dev
detect_obj_free.3.en	debian 12 / libchardet-dev
detect_obj_free.3.ko	debian 12 / libchardet-dev