<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def join_resource_name(self, v):
 """Return a MetapackResourceUrl that includes a reference to the resource. Returns a MetapackResourceUrl, which will have a fragment """

        d = self.dict
        d['fragment'] = [v, None]
        return MetapackResourceUrl(downloader=self._downloader, **d)