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