public function getConfigurableOptions()
{
$resolver = parent::getConfigurableOptions();
$resolver->setDefaults(['load_from_net' => false, 'x_include' => false, 'dtd_validation' => false, 'scheme_validation' => false, 'triggered_by' => ['xml']]);
$resolver->addAllowedTypes('load_from_net', ['bool']);
$resolver->addAllowedTypes('x_include', ['bool']);
$resolver->addAllowedTypes('dtd_validation', ['bool']);
$resolver->addAllowedTypes('scheme_validation', ['bool']);
$resolver->addAllowedTypes('triggered_by', ['array']);
return $resolver;
}