Crummy\Phlack\Common\OptionsResolver::setDefined PHP Method

    public function setDefined($optionNames)
    {
        if (!$this->isLatest()) {
            return $this->setOptional($optionNames);
        }
        return parent::setDefined($optionNames);
    }

 /**
  * @param OptionsResolver $resolver
  */
 protected function setDefaultOptions(OptionsResolver $resolver)
 {
     $resolver->setRequired($this->required);
     $resolver->setDefined($this->optional);
     $resolver->setDefaults($this->defaults);
 }