getCarriers method

Will get a collection of PcoPeopleCarrier objects (expecting many) using a path like this: https://api.planningcenteronline.com/people/v2/carriers

Implementation

Future<PcoCollection<PcoPeopleCarrier>> getCarriers(
    {PcoPeopleCarrierQuery? query}) async {
  query ??= PcoPeopleCarrierQuery();
  var url = '$apiEndpoint/carriers';
  return PcoCollection.fromApiCall<PcoPeopleCarrier>(url,
      query: query, apiVersion: apiVersion);
}