getBatchGroups method

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

Implementation

Future<PcoCollection<PcoGivingBatchGroup>> getBatchGroups(
    {PcoGivingBatchGroupQuery? query}) async {
  query ??= PcoGivingBatchGroupQuery();
  var url = '$apiEndpoint/batch_groups';
  return PcoCollection.fromApiCall<PcoGivingBatchGroup>(url,
      query: query, apiVersion: apiVersion);
}