code: def list_user_access(self, user):
          
          user = utils.get_name(user)
          uri = "/%s/%s/databases" % (self.uri_base, user)
          try:
              resp, resp_body = self.api.method_get(uri)
          except exc.NotFound as e:
              raise exc.NoSuchDatabaseUser("User '%s' does not exist." % user)
          dbs = resp_body.get("databases", {})
          return [CloudDatabaseDatabase(self, db) for db in dbs]
docs: Returns a list of all database names for which the specified user
          has access rights.