openclassify/addons/default/visiosoft/location-module/src/City/CityCriteria.php

<?php namespace Visiosoft\LocationModule\City;

use Anomaly\Streams\Platform\Entry\EntryCriteria;

class CityCriteria extends EntryCriteria
{
    public function getSubCities($city) {
        $this->query->where('parent_country_id', $city)->get();

        return $this;
    }
}