docs: def make_regex(self, url):
          '''
              Make regex string for ``PluggableSite`` urlpatterns: prepend url
              with parent object's url and app name.
  
              See also: http://code.djangoproject.com/ticket/11559.
          '''
          return r"^%s/%s%s$" % (self.object_getter.regex, self.app_name, url)