readById method
/////////////////////////////////////////////////////////////////////// /////////////////////////////////////////////////////////////////////// Calls read to lookup an entity record by it's unique identifier.
If not found then return null or throw an UnknownRecException based on checked.
Implementation
// Read by id
//////////////////////////////////////////////////////////////////////////
/// Calls [read] to lookup an entity record by it's unique identifier.
///
/// If not found then return null or throw an UnknownRecException based
/// on checked.
Future<HDict?> readById(HRef id, {bool checked = true}) {
return onReadById(id).then((HDict? rec) {
if (rec != null) return rec;
if (checked) throw UnknownRecError(id: id);
return null;
});
}