getCampuses method

Will get a collection of PcoGivingCampus objects (expecting many) using a path like this: https://api.planningcenteronline.com/giving/v2/campuses

Implementation

Future<PcoCollection<PcoGivingCampus>> getCampuses(
    {PcoGivingCampusQuery? query}) async {
  query ??= PcoGivingCampusQuery();
  var url = '$apiEndpoint/campuses';
  return PcoCollection.fromApiCall<PcoGivingCampus>(url,
      query: query, apiVersion: apiVersion);
}