Man pages matching name find_key_by_type_and_name in section 3:

find_key_by_type_and_name.3.en	debian 10 / libkeyutils-dev
find_key_by_type_and_name.3.en	debian 11 / libkeyutils-dev
find_key_by_type_and_name.3.en	debian 12 / libkeyutils-dev