oauth2-server/tests/Stubs/ScopeEntity.php

<?php

namespace LeagueTests\Stubs;

use League\OAuth2\Server\Entities\Interfaces\ScopeEntityInterface;
use League\OAuth2\Server\Entities\Traits\EntityTrait;

class ScopeEntity implements ScopeEntityInterface
{
    use EntityTrait;

    public function jsonSerialize()
    {
        return $this->getIdentifier();
    }
}