Zend_Http_UserAgent_AbstractDevice::setGroup PHP Method

    public function setGroup($group, $feature)
    {
        if (!isset($this->_aGroup[$group])) {
            $this->_aGroup[$group] = array();
        }
        if (!in_array($feature, $this->_aGroup[$group])) {
            $this->_aGroup[$group][] = $feature;
        }
        return $this;
    }