getTags method
Will get a collection of PcoGroupsTag objects (expecting many)
using a path like this: https://api.planningcenteronline.com/groups/v2/groups/1/tags
Implementation
Future<PcoCollection<PcoGroupsTag>> getTags(
{PcoGroupsTagQuery? query}) async {
query ??= PcoGroupsTagQuery();
var url = '$apiEndpoint/tags';
return PcoCollection.fromApiCall<PcoGroupsTag>(url,
query: query, apiVersion: apiVersion);
}