if clientId != nil {
  let query = NSPredicate(format: "%K == %@", "clientId", clientId as CVarArg)
            request.predicate = query

            do {
                let foundEntities: [LocalTrip] = try manager.context.fetch(request)
                return foundEntities
            } catch {
                let fetchError = error as NSError
                debugPrint(fetchError)
            }
            return []
        }