code: def area_uri(self, area_uuid):
          
          if area_uuid not in self.areas:
              raise UploadException("I don't know about area {uuid}".format(uuid=area_uuid))
          return UploadAreaURI(self._config.upload.areas[area_uuid]['uri'])
docs: Return the URI for an Upload Area
          :param area_uuid: UUID of area for which we want URI
          :return: Upload Area URI object
          :rtype: UploadAreaURI
          :raises UploadException: if area does not exist