public static function factory($resource = '', $size = null)
    {
        if ($resource instanceof EntityBodyInterface) {
            return $resource;
        }

        switch (gettype($resource)) {
            case 'string':
                return self::fromString($resource);
            case 'resource':
                return new static($resource, $size);
            case 'object':
                if (method_exists($resource, '__toString')) {
                    return self::fromString((string) $resource);
                }
                break;
            case 'array':
                return self::fromString(http_build_query($resource));
        }

        throw new InvalidArgumentException('Invalid resource type');
    }