getMessageGroup method

Will get a collection of PcoPeopleMessageGroup objects (expecting one) using a path like this: https://api.planningcenteronline.com/people/v2/messages/1/message_group

Implementation

Future<PcoCollection<PcoPeopleMessageGroup>> getMessageGroup(
    {PcoPeopleMessageGroupQuery? query}) async {
  query ??= PcoPeopleMessageGroupQuery();
  var url = '$apiEndpoint/message_group';
  return PcoCollection.fromApiCall<PcoPeopleMessageGroup>(url,
      query: query, apiVersion: apiVersion);
}