code: def UpsertPermission(self, user_link, permission, options=None):
          
          if options is None:
              options = {}
  
          path, user_id = self._GetUserIdWithPathForPermission(permission, user_link)
          return self.Upsert(permission,
                              path,
                              'permissions',
                              user_id,
                              None,
                              options)
docs: Upserts a permission for a user.
  
          :param str user_link:
              The link to the user entity.
          :param dict permission:
              The Azure Cosmos user permission to upsert.
          :param dict options:
              The request options for the request.
  
          :return:
              The upserted permission.
          :rtype:
              dict