krb5_get_init_creds_opt_set_anonymous
krb5_get_init_creds_opt_set_anonymous (opt, anonymous_flag);
krb5_get_init_creds_opt_set_anonymous (opt, b);
krb5_get_init_creds_opt_set_anonymous (
krb5_get_init_creds_opt_set_anonymous(options, 1);
krb5_get_init_creds_opt_set_anonymous(opt, 1);