Usermanager/Database/Seeders/PermissionGroupSeeder.php

<?php

    namespace Modules\Usermanager\Database\Seeders;

    use Illuminate\Database\Seeder;
    use Modules\Usermanager\Entities\PermissionGroup;

    class PermissionGroupSeeder extends Seeder
    {
        /**
         * Run the database seeds.
         *
         * @return void
         */
        public function run()
        {
            $data = $this->data();

            foreach ($data as $value) {
                PermissionGroup::updateOrCreate([
                    'name'       => $value['name']
                ]);
            }
        }

        public function data()
        {
            return [
                ['name' => 'User'],
                ['name' => 'Role'],
                ['name' => 'Permission']
            ];
        }
    }