docs: def manages(self, account):
          """
          Returns ``True`` if the ``request.user`` is a manager for ``account``.
          ``account`` will be converted to a string and compared
          to an organization slug.
          """
          account_slug = str(account)
          for organization in self.request.session.get(
                  'roles', {}).get('manager', []):
              if account_slug == organization['slug']:
                  return True
          return False