src/Factory/ChainFactory.php
protected static function configureOptionResolver(OptionsResolver $resolver)
    {
        parent::configureOptionResolver($resolver);

        $resolver->setRequired('services');
        $resolver->setAllowedTypes('services', ['array']);

        $resolver->setDefault('skip_on_failure', false);
    }
protected static function configureOptionResolver(OptionsResolver $resolver)
    {
        parent::configureOptionResolver($resolver);

        $resolver->setRequired('services');
        $resolver->setAllowedTypes('services', ['array']);

        $resolver->setDefault('skip_on_failure', false);
    }
{@inheritdoc}