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