public function fire()
    {
        $this->loadMNTables();
        $dir = $this->checkAndExtractModelFile();

        foreach (glob($dir . '*.mwb.xml') as $file) {
            $reader = new MWBModelReader();
            $reader->open($file);

            $this
                ->setModelReader($reader)
                ->handleModelTables();
        } // foreach

        return null;
    }