code: def test_explain_with_target_implementation():
      target_client = deployments.get_deploy_client(f_target)
      res = target_client.explain(f_target, "test")
      assert res == "1"
  
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 16 for calling a global function with example usage: test_explain_with_target_implementation() without return types