getEvents method
Will get a collection of PcoCalendarEvent objects (expecting many)
using a path like this: https://api.planningcenteronline.com/calendar/v2/tag_groups/1/events
Implementation
Future<PcoCollection<PcoCalendarEvent>> getEvents(
{PcoCalendarEventQuery? query}) async {
query ??= PcoCalendarEventQuery();
var url = '$apiEndpoint/events';
return PcoCollection.fromApiCall<PcoCalendarEvent>(url,
query: query, apiVersion: apiVersion);
}