getBatchGroup method
Will get a collection of PcoGivingBatchGroup objects (expecting one)
using a path like this: https://api.planningcenteronline.com/giving/v2/batches/1/batch_group
Implementation
Future<PcoCollection<PcoGivingBatchGroup>> getBatchGroup(
{PcoGivingBatchGroupQuery? query}) async {
query ??= PcoGivingBatchGroupQuery();
var url = '$apiEndpoint/batch_group';
return PcoCollection.fromApiCall<PcoGivingBatchGroup>(url,
query: query, apiVersion: apiVersion);
}