krb5_verify_init_creds_opt_set_ap_req_nofail
krb5_verify_init_creds_opt_set_ap_req_nofail(krb5_verify_init_creds_opt *options,
krb5_verify_init_creds_opt_set_ap_req_nofail(krb5_verify_init_creds_opt *opt, int ap_req_nofail)