Inheritance: extends Illuminate\Database\Eloquent\Model, use trait Dimsav\Translatable\Translatable
 private function createCities($cities)
 {
     foreach ($cities as $data) {
         $city = new City();
         $city->id = $data['id'];
         $city->country_id = $data['country_id'];
         $city->save();
     }
 }
 /**
  * @test
  */
 public function it_deletes_translations()
 {
     $city = City::find(1);
     $cityId = $city->id;
     $translation = $city->translate('en');
     $this->assertTrue(is_object($translation));
     $city->delete();
     $city = City::find($cityId);
     $this->assertNull($city);
     $translations = CityTranslation::where('city_id', '=', $cityId)->get();
     $this->assertEquals(0, count($translations));
 }