Zend_Http_UserAgent_AbstractDevice::_loadFeaturesAdapter PHP Method

    protected function _loadFeaturesAdapter()
    {
        $config = $this->_config;
        $browserType = $this->getType();
        if (!isset($config[$browserType]) || !isset($config[$browserType]['features'])) {
            return array();
        }
        $config = $config[$browserType]['features'];
        if (empty($config['classname'])) {
            require_once 'Zend/Http/UserAgent/Exception.php';
            throw new Zend_Http_UserAgent_Exception('The ' . $this->getType() . ' features adapter must have a "classname" config parameter defined');
        }
        $className = $config['classname'];
        if (!class_exists($className)) {
            if (isset($config['path'])) {
                $path = $config['path'];
            } else {
                require_once 'Zend/Http/UserAgent/Exception.php';
                throw new Zend_Http_UserAgent_Exception('The ' . $this->getType() . ' features adapter must have a "path" config parameter defined');
            }
            if (false === (include_once $path)) {
                require_once 'Zend/Http/UserAgent/Exception.php';
                throw new Zend_Http_UserAgent_Exception('The ' . $this->getType() . ' features adapter path that does not exist');
            }
        }
        return call_user_func(array($className, 'getFromRequest'), $this->_server, $this->_config);
    }