getById method
Implementation
Future<Map<String, Object?>?> getById(String id) async {
var oid = ObjectId.tryParse(id);
if (oid == null || !await existId(id)) {
return null;
}
var res = await collection.findOne(where.id(oid));
if (res != null) {
return toModel(res);
}
return null;
}