yupe\components\Migrator::instantiateMigration PHP Method

    protected function instantiateMigration($module, $class)
    {
        $file = Yii::getPathOfAlias("application.modules." . $module . ".install.migrations") . '/' . $class . '.php';
        include_once $file;
        $migration = new $class();
        $migration->setDbConnection($this->getDbConnection());
        return $migration;
    }