@property<EOL><INDENT>def cdn_url(self):<DEDENT>
return '<STR_LIT>'.format(<EOL>cdn_base=conf.cdn_base,<EOL>group_id=self.id<EOL>)<EOL>
Returns group's CDN url.

        Usage example::

            >>> file_group = FileGroup('0513dda0-582f-447d-846f-096e5df9e2bb~2')
            >>> file_group.cdn_url
            https://ucarecdn.com/0513dda0-582f-447d-846f-096e5df9e2bb~2/