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