code: def test_endpoint_update_success():
      client = deployments.get_deploy_client(f_target)
      assert client.update_endpoint(f_endpoint_name) is None
  
imports: import os
  from unittest import mock
  import pytest
  from mlflow import deployments
  from mlflow.deployments.plugin_manager import DeploymentPlugins
  from mlflow.exceptions import MlflowException
label_desc: Use image node_id 8 for calling a global function with example usage: test_endpoint_update_success() without return types