protected function includeMigrationFile($class)
    {
        $class = trim($class, '\\');
        if (strpos($class, '\\') === false) {
            if (is_array($this->migrationPath)) {
                foreach ($this->migrationPath as $path) {
                    $file = $path . DIRECTORY_SEPARATOR . $class . '.php';
                    if (is_file($file)) {
                        require_once $file;
                        break;
                    }
                }
            } else {
                $file = $this->migrationPath . DIRECTORY_SEPARATOR . $class . '.php';
                require_once $file;
            }
        }
    }