public static function findFieldClass($method)
    {
        // If alias exists.
        if (isset(static::$fieldAlias[$method])) {
            $method = static::$fieldAlias[$method];
        }

        $class = Arr::get(static::$availableFields, $method);

        if (class_exists($class)) {
            return $class;
        }

        return false;
    }