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