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