code: def create_backup(self, instance, name, description=None):
          
          body = {"backup": {
                  "instance": utils.get_id(instance),
                  "name": name,
                  }}
          if description is not None:
              body["backup"]["description"] = description
          uri = "/backups"
          resp, resp_body = self.api.method_post(uri, body=body)
          mgr = self.api._backup_manager
          return CloudDatabaseBackup(mgr, body.get("backup"))
docs: Creates a backup of the specified instance, giving it the specified
          name along with an optional description.