function it_returns_the_client_id(ResourceServer $checker, AccessTokenEntity $accessTokenEntity, SessionEntity $sessionEntity, ClientEntity $clientEntity)
 {
     $clientEntity->getId()->willReturn('1')->shouldBeCalled();
     $sessionEntity->getClient()->willReturn($clientEntity)->shouldBeCalled();
     $accessTokenEntity->getSession()->willReturn($sessionEntity)->shouldBeCalled();
     $checker->getAccessToken()->willReturn($accessTokenEntity)->shouldBeCalled();
     $this->getClientId()->shouldReturn('1');
 }