Overrides \Drupal\Core\Form\ConfirmFormBase::buildForm().
Overrides ConfirmFormBase::buildForm
public function buildForm(array $form, array &$form_state, $pid = NULL) {
$this->pathAlias = $this->path
->load(array(
'pid' => $pid,
));
return parent::buildForm($form, $form_state);
}