/**
* Flash a container of errors to the session.
*
* @param \Nova\Support\Contracts\MessageProviderInterface|array $provider
* @param string $key
* @return $this
*/
public function withErrors($provider, $key = 'default')
{
$value = $this->parseErrors($provider);
$this->session->flash('errors', $this->session->get('errors', new ViewErrorBag())->put($key, $value));
return $this;
}
