public function getCommentsOption($key)
    {
        $settings = $this->getCommentsOptions();
        $value = null;

        if (isset($settings[$key])) {
            $value = $settings[$key];
        }

        // To allow other extensions to customise this option
        if ($this->owner) {
            $this->owner->extend('updateCommentsOption', $key, $value);
        }

        return $value;
    }