/**
* {@inheritdoc}
*/
public function validateForm(array &$form, FormStateInterface $form_state)
{
parent::validateForm($form, $form_state);
$embed_provider = $form_state->getValue('embed_provider');
$this->prepareEmbedProviderValidation($embed_provider);
if (!URLHelper::isValid($embed_provider, TRUE)) {
$form_state->setErrorByName('embed_provider', $this->t('The provider url was not valid.'));
}
}
