public function run()
 {
     $poolTypes = PoolType::all();
     factory(Nhlpool\Pool::class, 5)->create(['pool_type_id' => $poolTypes->random()->id]);
     factory(Nhlpool\Pool::class, 5)->create(['pool_type_id' => $poolTypes->random()->id]);
     factory(Nhlpool\Pool::class, 5)->create(['pool_type_id' => $poolTypes->random()->id]);
     factory(Nhlpool\Pool::class, 5)->create(['pool_type_id' => $poolTypes->random()->id]);
     factory(Nhlpool\Pool::class, 5)->create(['pool_type_id' => $poolTypes->random()->id]);
 }