Man pages matching name shishi_x509cert_default_file_guess in section 3:

shishi_x509cert_default_file_guess.3.en	debian 10 / shishi-doc
shishi_x509cert_default_file_guess.3.en	debian 11 / shishi-doc
shishi_x509cert_default_file_guess.3.en	debian 12 / shishi-doc