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