Symfony\Component\Security\Http\RememberMe\AbstractRememberMeServices::getUserProvider PHP Method

    final protected function getUserProvider($class)
    {
        foreach ($this->userProviders as $provider) {
            if ($provider->supportsClass($class)) {
                return $provider;
            }
        }

        throw new UnsupportedUserException(sprintf('There is no user provider that supports class "%s".', $class));
    }