Appcafe is one giant service in the Mewburn rc system.
That is not the case here.
Here, it comprises:
one target: appcafe, which is what is enabled when one enables "appcafe"
four distinct services: appcafe-nginx, appcafe-dispatcher, appcafe-php-fpm, and appcafe-ssl-keygen, which are wanted by that target when they are enabled
Additionally, in the Mewburn rc system Appcafe is configured by a subsystem-specific configuration file in /usr/local/etc/appcafe.conf.
Here, the rc.conf conversion subsystem permits the Appcafe settings there to be overridden with normal rc.conf settings:
appcafe_nginx_portport= in /usr/local/etc/appcafe.conf.appcafe_nginx_sslssl= in /usr/local/etc/appcafe.conf.
If you are looking for the nginx.conf used by the appcafe-nginx service, it is in that service's own service directory.
The external configuration conversion subsystem copies it from the originals in /usr/local/share/appcafe, leaving them untouched, and edits in the port and ssl configuration.