getThemes method

Will get a collection of PcoCheckInsTheme objects (expecting many) using a path like this: https://api.planningcenteronline.com/check-ins/v2/themes

Implementation

Future<PcoCollection<PcoCheckInsTheme>> getThemes(
    {PcoCheckInsThemeQuery? query}) async {
  query ??= PcoCheckInsThemeQuery();
  var url = '$apiEndpoint/themes';
  return PcoCollection.fromApiCall<PcoCheckInsTheme>(url,
      query: query, apiVersion: apiVersion);
}