I'm developing an APEX 18.2 app and I'd like to incorporate a fully functional google calendar (insert event, modify event, delete event, display events, send notifications). I've got a fair bit of experience with APEX 5 and earlier but none with external interfaces (e.g. google). The references I've found seem to all be based on APEX 5 or earlier. I've loooked at the set of solutions provided by smart4solutions but again, they're focused on APEX 5.
Are there any good resources for 18.2 web services and how they're configured for google (and in particular for the calendar)?