Crummy\Phlack\Bot\Mainframe\Packet::setDefaultOptions PHP Method

    protected function setDefaultOptions(OptionsResolver $resolver)
    {
        $resolver->setRequired(['command']);
        $resolver->setDefaults(['output' => null]);
        $resolver->setTypesAllowed(['command' => '\\Crummy\\Phlack\\WebHook\\CommandInterface', 'output' => ['\\Crummy\\Phlack\\WebHook\\Reply\\Reply', 'null']]);
    }