private function _getconfig()
    {
        if ((!defined('PSI_PLUGIN_'.strtoupper($this->_plugin_name).'_ACCESS')) &&
             (!defined('PSI_PLUGIN_'.strtoupper($this->_plugin_name).'_FILE')) &&
             (!defined('PSI_PLUGIN_'.strtoupper($this->_plugin_name).'_SHOW_SERIAL'))) {
                $this->global_error->addError("config.ini", "Config for plugin ".$this->_plugin_name." not exist!");
        }
    }