Man pages matching name xcb_screensaver_unset_attributes in section 3:

xcb_screensaver_unset_attributes.3.en	debian 10 / libxcb-doc
xcb_screensaver_unset_attributes.3.en	debian 11 / libxcb-doc
xcb_screensaver_unset_attributes.3.en	debian 12 / libxcb-doc