getForm method
Will get a collection of PcoPeopleForm objects (expecting one)
using a path like this: https://api.planningcenteronline.com/people/v2/forms/1/form_submissions/1/form
Implementation
Future<PcoCollection<PcoPeopleForm>> getForm(
{PcoPeopleFormQuery? query}) async {
query ??= PcoPeopleFormQuery();
var url = '$apiEndpoint/form';
return PcoCollection.fromApiCall<PcoPeopleForm>(url,
query: query, apiVersion: apiVersion);
}