getSignupSheets method

Will get a collection of PcoServicesSignupSheet objects (expecting many) using a path like this: https://api.planningcenteronline.com/services/v2/people/1/available_signups/1/signup_sheets

Implementation

Future<PcoCollection<PcoServicesSignupSheet>> getSignupSheets(
    {PcoServicesSignupSheetQuery? query}) async {
  query ??= PcoServicesSignupSheetQuery();
  var url = '$apiEndpoint/signup_sheets';
  return PcoCollection.fromApiCall<PcoServicesSignupSheet>(url,
      query: query, apiVersion: apiVersion);
}